| Step | Hyp | Ref | Expression | 
						
							| 1 |  | cdlemg12.l |  | 
						
							| 2 |  | cdlemg12.j |  | 
						
							| 3 |  | cdlemg12.m |  | 
						
							| 4 |  | cdlemg12.a |  | 
						
							| 5 |  | cdlemg12.h |  | 
						
							| 6 |  | cdlemg12.t |  | 
						
							| 7 |  | cdlemg12b.r |  | 
						
							| 8 | 1 2 3 4 5 6 7 | cdlemg17pq |  | 
						
							| 9 |  | simp11 |  | 
						
							| 10 |  | simp12 |  | 
						
							| 11 |  | simp13 |  | 
						
							| 12 |  | simp22 |  | 
						
							| 13 |  | simp23 |  | 
						
							| 14 |  | simp3 |  | 
						
							| 15 | 1 2 3 4 5 6 7 | cdlemg17b |  | 
						
							| 16 | 9 10 11 12 13 14 15 | syl321anc |  | 
						
							| 17 | 8 16 | syl |  |