| Step | 
						Hyp | 
						Ref | 
						Expression | 
					
						
							| 1 | 
							
								
							 | 
							latlej.b | 
							   | 
						
						
							| 2 | 
							
								
							 | 
							latlej.l | 
							   | 
						
						
							| 3 | 
							
								
							 | 
							latlej.j | 
							   | 
						
						
							| 4 | 
							
								
							 | 
							simp1 | 
							   | 
						
						
							| 5 | 
							
								
							 | 
							simp2l | 
							   | 
						
						
							| 6 | 
							
								
							 | 
							simp2r | 
							   | 
						
						
							| 7 | 
							
								
							 | 
							simp3l | 
							   | 
						
						
							| 8 | 
							
								1 2 3
							 | 
							latjlej1 | 
							   | 
						
						
							| 9 | 
							
								4 5 6 7 8
							 | 
							syl13anc | 
							   | 
						
						
							| 10 | 
							
								
							 | 
							simp3r | 
							   | 
						
						
							| 11 | 
							
								1 2 3
							 | 
							latjlej2 | 
							   | 
						
						
							| 12 | 
							
								4 7 10 6 11
							 | 
							syl13anc | 
							   | 
						
						
							| 13 | 
							
								1 3
							 | 
							latjcl | 
							   | 
						
						
							| 14 | 
							
								4 5 7 13
							 | 
							syl3anc | 
							   | 
						
						
							| 15 | 
							
								1 3
							 | 
							latjcl | 
							   | 
						
						
							| 16 | 
							
								4 6 7 15
							 | 
							syl3anc | 
							   | 
						
						
							| 17 | 
							
								1 3
							 | 
							latjcl | 
							   | 
						
						
							| 18 | 
							
								4 6 10 17
							 | 
							syl3anc | 
							   | 
						
						
							| 19 | 
							
								1 2
							 | 
							lattr | 
							   | 
						
						
							| 20 | 
							
								4 14 16 18 19
							 | 
							syl13anc | 
							   | 
						
						
							| 21 | 
							
								9 12 20
							 | 
							syl2and | 
							   |