| Step | Hyp | Ref | Expression | 
						
							| 1 |  | merco1 |  |-  ( ( ( ( ( F. -> ph ) -> ( ph -> F. ) ) -> ( ph -> F. ) ) -> ( F. -> ph ) ) -> ( ( ( F. -> ph ) -> F. ) -> ( ph -> F. ) ) ) | 
						
							| 2 |  | merco1 |  |-  ( ( ( ( ( ( F. -> ph ) -> ( ph -> F. ) ) -> ( ph -> F. ) ) -> ( F. -> ph ) ) -> ( ( ( F. -> ph ) -> F. ) -> ( ph -> F. ) ) ) -> ( ( ( ( ( F. -> ph ) -> F. ) -> ( ph -> F. ) ) -> ( F. -> ph ) ) -> ( ph -> ( F. -> ph ) ) ) ) | 
						
							| 3 | 1 2 | ax-mp |  |-  ( ( ( ( ( F. -> ph ) -> F. ) -> ( ph -> F. ) ) -> ( F. -> ph ) ) -> ( ph -> ( F. -> ph ) ) ) | 
						
							| 4 |  | merco1 |  |-  ( ( ( ( ( ( F. -> ph ) -> F. ) -> ( ph -> F. ) ) -> ( F. -> ph ) ) -> ( ph -> ( F. -> ph ) ) ) -> ( ( ( ph -> ( F. -> ph ) ) -> ( F. -> ph ) ) -> ( ph -> ( F. -> ph ) ) ) ) | 
						
							| 5 | 3 4 | ax-mp |  |-  ( ( ( ph -> ( F. -> ph ) ) -> ( F. -> ph ) ) -> ( ph -> ( F. -> ph ) ) ) | 
						
							| 6 |  | merco1 |  |-  ( ( ( ( ( F. -> ph ) -> ( ph -> F. ) ) -> ( ( ph -> ( F. -> ph ) ) -> F. ) ) -> ( ph -> ( F. -> ph ) ) ) -> ( ( ( ph -> ( F. -> ph ) ) -> F. ) -> ( ph -> F. ) ) ) | 
						
							| 7 |  | merco1 |  |-  ( ( ( ( ( ( F. -> ph ) -> ( ph -> F. ) ) -> ( ( ph -> ( F. -> ph ) ) -> F. ) ) -> ( ph -> ( F. -> ph ) ) ) -> ( ( ( ph -> ( F. -> ph ) ) -> F. ) -> ( ph -> F. ) ) ) -> ( ( ( ( ( ph -> ( F. -> ph ) ) -> F. ) -> ( ph -> F. ) ) -> ( F. -> ph ) ) -> ( ( ph -> ( F. -> ph ) ) -> ( F. -> ph ) ) ) ) | 
						
							| 8 | 6 7 | ax-mp |  |-  ( ( ( ( ( ph -> ( F. -> ph ) ) -> F. ) -> ( ph -> F. ) ) -> ( F. -> ph ) ) -> ( ( ph -> ( F. -> ph ) ) -> ( F. -> ph ) ) ) | 
						
							| 9 |  | merco1 |  |-  ( ( ( ( ( ( ph -> ( F. -> ph ) ) -> F. ) -> ( ph -> F. ) ) -> ( F. -> ph ) ) -> ( ( ph -> ( F. -> ph ) ) -> ( F. -> ph ) ) ) -> ( ( ( ( ph -> ( F. -> ph ) ) -> ( F. -> ph ) ) -> ( ph -> ( F. -> ph ) ) ) -> ( ph -> ( ph -> ( F. -> ph ) ) ) ) ) | 
						
							| 10 | 8 9 | ax-mp |  |-  ( ( ( ( ph -> ( F. -> ph ) ) -> ( F. -> ph ) ) -> ( ph -> ( F. -> ph ) ) ) -> ( ph -> ( ph -> ( F. -> ph ) ) ) ) | 
						
							| 11 | 5 10 | ax-mp |  |-  ( ph -> ( ph -> ( F. -> ph ) ) ) | 
						
							| 12 |  | merco1 |  |-  ( ( ( ( ( F. -> ph ) -> ( ph -> F. ) ) -> ( ph -> F. ) ) -> ( F. -> ch ) ) -> ( ( ( F. -> ch ) -> F. ) -> ( ph -> F. ) ) ) | 
						
							| 13 |  | merco1 |  |-  ( ( ( ( ( ( F. -> ph ) -> ( ph -> F. ) ) -> ( ph -> F. ) ) -> ( F. -> ch ) ) -> ( ( ( F. -> ch ) -> F. ) -> ( ph -> F. ) ) ) -> ( ( ( ( ( F. -> ch ) -> F. ) -> ( ph -> F. ) ) -> ( F. -> ph ) ) -> ( ph -> ( F. -> ph ) ) ) ) | 
						
							| 14 | 12 13 | ax-mp |  |-  ( ( ( ( ( F. -> ch ) -> F. ) -> ( ph -> F. ) ) -> ( F. -> ph ) ) -> ( ph -> ( F. -> ph ) ) ) | 
						
							| 15 |  | merco1 |  |-  ( ( ( ( ( ( F. -> ch ) -> F. ) -> ( ph -> F. ) ) -> ( F. -> ph ) ) -> ( ph -> ( F. -> ph ) ) ) -> ( ( ( ph -> ( F. -> ph ) ) -> ( F. -> ch ) ) -> ( ph -> ( F. -> ch ) ) ) ) | 
						
							| 16 | 14 15 | ax-mp |  |-  ( ( ( ph -> ( F. -> ph ) ) -> ( F. -> ch ) ) -> ( ph -> ( F. -> ch ) ) ) | 
						
							| 17 |  | merco1 |  |-  ( ( ( ( ( F. -> ch ) -> ( ( ph -> ( ph -> ( F. -> ph ) ) ) -> F. ) ) -> ( ( ph -> ( F. -> ph ) ) -> F. ) ) -> ( ph -> ( F. -> ch ) ) ) -> ( ( ( ph -> ( F. -> ch ) ) -> F. ) -> ( ( ph -> ( ph -> ( F. -> ph ) ) ) -> F. ) ) ) | 
						
							| 18 |  | merco1 |  |-  ( ( ( ( ( ( F. -> ch ) -> ( ( ph -> ( ph -> ( F. -> ph ) ) ) -> F. ) ) -> ( ( ph -> ( F. -> ph ) ) -> F. ) ) -> ( ph -> ( F. -> ch ) ) ) -> ( ( ( ph -> ( F. -> ch ) ) -> F. ) -> ( ( ph -> ( ph -> ( F. -> ph ) ) ) -> F. ) ) ) -> ( ( ( ( ( ph -> ( F. -> ch ) ) -> F. ) -> ( ( ph -> ( ph -> ( F. -> ph ) ) ) -> F. ) ) -> ( F. -> ch ) ) -> ( ( ph -> ( F. -> ph ) ) -> ( F. -> ch ) ) ) ) | 
						
							| 19 | 17 18 | ax-mp |  |-  ( ( ( ( ( ph -> ( F. -> ch ) ) -> F. ) -> ( ( ph -> ( ph -> ( F. -> ph ) ) ) -> F. ) ) -> ( F. -> ch ) ) -> ( ( ph -> ( F. -> ph ) ) -> ( F. -> ch ) ) ) | 
						
							| 20 |  | merco1 |  |-  ( ( ( ( ( ( ph -> ( F. -> ch ) ) -> F. ) -> ( ( ph -> ( ph -> ( F. -> ph ) ) ) -> F. ) ) -> ( F. -> ch ) ) -> ( ( ph -> ( F. -> ph ) ) -> ( F. -> ch ) ) ) -> ( ( ( ( ph -> ( F. -> ph ) ) -> ( F. -> ch ) ) -> ( ph -> ( F. -> ch ) ) ) -> ( ( ph -> ( ph -> ( F. -> ph ) ) ) -> ( ph -> ( F. -> ch ) ) ) ) ) | 
						
							| 21 | 19 20 | ax-mp |  |-  ( ( ( ( ph -> ( F. -> ph ) ) -> ( F. -> ch ) ) -> ( ph -> ( F. -> ch ) ) ) -> ( ( ph -> ( ph -> ( F. -> ph ) ) ) -> ( ph -> ( F. -> ch ) ) ) ) | 
						
							| 22 | 16 21 | ax-mp |  |-  ( ( ph -> ( ph -> ( F. -> ph ) ) ) -> ( ph -> ( F. -> ch ) ) ) | 
						
							| 23 | 11 22 | ax-mp |  |-  ( ph -> ( F. -> ch ) ) |