| Step | Hyp | Ref | Expression | 
						
							| 1 |  | cdlemk5.b |  | 
						
							| 2 |  | cdlemk5.l |  | 
						
							| 3 |  | cdlemk5.j |  | 
						
							| 4 |  | cdlemk5.m |  | 
						
							| 5 |  | cdlemk5.a |  | 
						
							| 6 |  | cdlemk5.h |  | 
						
							| 7 |  | cdlemk5.t |  | 
						
							| 8 |  | cdlemk5.r |  | 
						
							| 9 |  | cdlemk5.z |  | 
						
							| 10 |  | cdlemk5.y |  | 
						
							| 11 |  | cdlemk5.x |  | 
						
							| 12 |  | simp22l |  | 
						
							| 13 | 1 2 3 4 5 6 7 8 9 10 11 | cdlemk35 |  | 
						
							| 14 | 13 | sbcth |  | 
						
							| 15 |  | sbcimg |  | 
						
							| 16 | 14 15 | mpbid |  | 
						
							| 17 |  | eleq1 |  | 
						
							| 18 |  | neeq1 |  | 
						
							| 19 | 17 18 | anbi12d |  | 
						
							| 20 | 19 | 3anbi2d |  | 
						
							| 21 | 20 | 3anbi2d |  | 
						
							| 22 | 21 | sbcieg |  | 
						
							| 23 |  | sbcel1g |  | 
						
							| 24 | 16 22 23 | 3imtr3d |  | 
						
							| 25 | 12 24 | mpcom |  |