| Step | Hyp | Ref | Expression | 
						
							| 0 |  | cstrkg2d |  | 
						
							| 1 |  | vf |  | 
						
							| 2 |  | cbs |  | 
						
							| 3 | 1 | cv |  | 
						
							| 4 | 3 2 | cfv |  | 
						
							| 5 |  | vp |  | 
						
							| 6 |  | cds |  | 
						
							| 7 | 3 6 | cfv |  | 
						
							| 8 |  | vd |  | 
						
							| 9 |  | citv |  | 
						
							| 10 | 3 9 | cfv |  | 
						
							| 11 |  | vi |  | 
						
							| 12 |  | vx |  | 
						
							| 13 | 5 | cv |  | 
						
							| 14 |  | vy |  | 
						
							| 15 |  | vz |  | 
						
							| 16 | 15 | cv |  | 
						
							| 17 | 12 | cv |  | 
						
							| 18 | 11 | cv |  | 
						
							| 19 | 14 | cv |  | 
						
							| 20 | 17 19 18 | co |  | 
						
							| 21 | 16 20 | wcel |  | 
						
							| 22 | 16 19 18 | co |  | 
						
							| 23 | 17 22 | wcel |  | 
						
							| 24 | 17 16 18 | co |  | 
						
							| 25 | 19 24 | wcel |  | 
						
							| 26 | 21 23 25 | w3o |  | 
						
							| 27 | 26 | wn |  | 
						
							| 28 | 27 15 13 | wrex |  | 
						
							| 29 | 28 14 13 | wrex |  | 
						
							| 30 | 29 12 13 | wrex |  | 
						
							| 31 |  | vu |  | 
						
							| 32 |  | vv |  | 
						
							| 33 | 8 | cv |  | 
						
							| 34 | 31 | cv |  | 
						
							| 35 | 17 34 33 | co |  | 
						
							| 36 | 32 | cv |  | 
						
							| 37 | 17 36 33 | co |  | 
						
							| 38 | 35 37 | wceq |  | 
						
							| 39 | 19 34 33 | co |  | 
						
							| 40 | 19 36 33 | co |  | 
						
							| 41 | 39 40 | wceq |  | 
						
							| 42 | 16 34 33 | co |  | 
						
							| 43 | 16 36 33 | co |  | 
						
							| 44 | 42 43 | wceq |  | 
						
							| 45 | 38 41 44 | w3a |  | 
						
							| 46 | 34 36 | wne |  | 
						
							| 47 | 45 46 | wa |  | 
						
							| 48 | 47 26 | wi |  | 
						
							| 49 | 48 32 13 | wral |  | 
						
							| 50 | 49 31 13 | wral |  | 
						
							| 51 | 50 15 13 | wral |  | 
						
							| 52 | 51 14 13 | wral |  | 
						
							| 53 | 52 12 13 | wral |  | 
						
							| 54 | 30 53 | wa |  | 
						
							| 55 | 54 11 10 | wsbc |  | 
						
							| 56 | 55 8 7 | wsbc |  | 
						
							| 57 | 56 5 4 | wsbc |  | 
						
							| 58 | 57 1 | cab |  | 
						
							| 59 | 0 58 | wceq |  |