| Step | Hyp | Ref | Expression | 
						
							| 1 |  | simp11 |  | 
						
							| 2 |  | simp2r1 |  | 
						
							| 3 |  | simp2r3 |  | 
						
							| 4 |  | simp2l2 |  | 
						
							| 5 |  | simp31 |  | 
						
							| 6 |  | simp33 |  | 
						
							| 7 |  | simp32 |  | 
						
							| 8 |  | simprlr |  | 
						
							| 9 | 8 | adantl |  | 
						
							| 10 | 1 3 4 2 9 | btwncomand |  | 
						
							| 11 |  | simpr3l |  | 
						
							| 12 | 11 | ad2antll |  | 
						
							| 13 |  | btwnconn1lem8 |  | 
						
							| 14 |  | cgrcomlr |  | 
						
							| 15 | 1 6 5 3 2 14 | syl122anc |  | 
						
							| 16 |  | cgrcom |  | 
						
							| 17 | 1 5 6 2 3 16 | syl122anc |  | 
						
							| 18 | 15 17 | bitrd |  | 
						
							| 19 | 18 | adantr |  | 
						
							| 20 | 13 19 | mpbid |  | 
						
							| 21 |  | btwnconn1lem9 |  | 
						
							| 22 | 1 6 7 3 4 21 | cgrcomand |  | 
						
							| 23 | 1 2 3 4 5 6 7 10 12 20 22 | cgrextendand |  |