| Step | Hyp | Ref | Expression | 
						
							| 1 |  | cdlemg8.l |  | 
						
							| 2 |  | cdlemg8.j |  | 
						
							| 3 |  | cdlemg8.m |  | 
						
							| 4 |  | cdlemg8.a |  | 
						
							| 5 |  | cdlemg8.h |  | 
						
							| 6 |  | cdlemg8.t |  | 
						
							| 7 | 1 2 3 4 5 6 | cdlemg9b |  | 
						
							| 8 |  | simp1l |  | 
						
							| 9 |  | simp21l |  | 
						
							| 10 |  | simp1 |  | 
						
							| 11 |  | simp23 |  | 
						
							| 12 |  | simp31 |  | 
						
							| 13 | 1 4 5 6 | ltrncoat |  | 
						
							| 14 | 10 11 12 9 13 | syl121anc |  | 
						
							| 15 | 1 4 5 6 | ltrnat |  | 
						
							| 16 | 10 12 9 15 | syl3anc |  | 
						
							| 17 |  | simp22l |  | 
						
							| 18 | 1 4 5 6 | ltrncoat |  | 
						
							| 19 | 10 11 12 17 18 | syl121anc |  | 
						
							| 20 | 1 4 5 6 | ltrnat |  | 
						
							| 21 | 10 12 17 20 | syl3anc |  | 
						
							| 22 | 1 2 3 4 | dalaw |  | 
						
							| 23 | 8 9 14 16 17 19 21 22 | syl133anc |  | 
						
							| 24 | 7 23 | mpd |  |