| Step | Hyp | Ref | Expression | 
						
							| 1 |  | raleq |  | 
						
							| 2 | 1 | rexralbidv |  | 
						
							| 3 |  | raleq |  | 
						
							| 4 | 2 3 | bibi12d |  | 
						
							| 5 |  | raleq |  | 
						
							| 6 | 5 | rexralbidv |  | 
						
							| 7 |  | raleq |  | 
						
							| 8 | 6 7 | bibi12d |  | 
						
							| 9 |  | raleq |  | 
						
							| 10 | 9 | rexralbidv |  | 
						
							| 11 |  | raleq |  | 
						
							| 12 | 10 11 | bibi12d |  | 
						
							| 13 |  | raleq |  | 
						
							| 14 | 13 | rexralbidv |  | 
						
							| 15 |  | raleq |  | 
						
							| 16 | 14 15 | bibi12d |  | 
						
							| 17 |  | 0z |  | 
						
							| 18 | 17 | ne0ii |  | 
						
							| 19 |  | ral0 |  | 
						
							| 20 | 19 | rgen2w |  | 
						
							| 21 |  | r19.2z |  | 
						
							| 22 | 18 20 21 | mp2an |  | 
						
							| 23 |  | ral0 |  | 
						
							| 24 | 22 23 | 2th |  | 
						
							| 25 |  | anbi1 |  | 
						
							| 26 |  | rexanuz |  | 
						
							| 27 |  | ralunb |  | 
						
							| 28 | 27 | ralbii |  | 
						
							| 29 | 28 | rexbii |  | 
						
							| 30 |  | ralsnsg |  | 
						
							| 31 |  | sbcrex |  | 
						
							| 32 |  | ralcom |  | 
						
							| 33 |  | ralsnsg |  | 
						
							| 34 | 32 33 | bitrid |  | 
						
							| 35 | 34 | rexbidv |  | 
						
							| 36 | 31 35 | bitr4id |  | 
						
							| 37 | 30 36 | bitrd |  | 
						
							| 38 | 37 | elv |  | 
						
							| 39 | 38 | anbi2i |  | 
						
							| 40 | 26 29 39 | 3bitr4i |  | 
						
							| 41 |  | ralunb |  | 
						
							| 42 | 25 40 41 | 3bitr4g |  | 
						
							| 43 | 42 | a1i |  | 
						
							| 44 | 4 8 12 16 24 43 | findcard2 |  |