| Step | Hyp | Ref | Expression | 
						
							| 1 |  | axacndlem5 |  | 
						
							| 2 |  | nfnae |  | 
						
							| 3 |  | nfnae |  | 
						
							| 4 |  | nfnae |  | 
						
							| 5 | 2 3 4 | nf3an |  | 
						
							| 6 |  | nfnae |  | 
						
							| 7 |  | nfnae |  | 
						
							| 8 |  | nfnae |  | 
						
							| 9 | 6 7 8 | nf3an |  | 
						
							| 10 |  | nfnae |  | 
						
							| 11 |  | nfnae |  | 
						
							| 12 |  | nfnae |  | 
						
							| 13 | 10 11 12 | nf3an |  | 
						
							| 14 |  | nfcvf |  | 
						
							| 15 | 14 | 3ad2ant2 |  | 
						
							| 16 |  | nfcvd |  | 
						
							| 17 | 15 16 | nfeld |  | 
						
							| 18 |  | nfcvf |  | 
						
							| 19 | 18 | 3ad2ant3 |  | 
						
							| 20 | 16 19 | nfeld |  | 
						
							| 21 | 17 20 | nfand |  | 
						
							| 22 | 5 21 | nfald |  | 
						
							| 23 |  | nfnae |  | 
						
							| 24 |  | nfnae |  | 
						
							| 25 |  | nfnae |  | 
						
							| 26 | 23 24 25 | nf3an |  | 
						
							| 27 | 15 19 | nfeld |  | 
						
							| 28 |  | nfcvf |  | 
						
							| 29 | 28 | 3ad2ant1 |  | 
						
							| 30 | 19 29 | nfeld |  | 
						
							| 31 | 27 30 | nfand |  | 
						
							| 32 | 21 31 | nfand |  | 
						
							| 33 | 26 32 | nfexd |  | 
						
							| 34 | 15 19 | nfeqd |  | 
						
							| 35 | 33 34 | nfbid |  | 
						
							| 36 | 9 35 | nfald |  | 
						
							| 37 | 26 36 | nfexd |  | 
						
							| 38 | 22 37 | nfimd |  | 
						
							| 39 |  | nfcvd |  | 
						
							| 40 |  | nfcvf2 |  | 
						
							| 41 | 40 | 3ad2ant1 |  | 
						
							| 42 | 39 41 | nfeqd |  | 
						
							| 43 | 5 42 | nfan1 |  | 
						
							| 44 |  | simpr |  | 
						
							| 45 | 44 | eleq2d |  | 
						
							| 46 | 44 | eleq1d |  | 
						
							| 47 | 45 46 | anbi12d |  | 
						
							| 48 | 43 47 | albid |  | 
						
							| 49 |  | nfcvd |  | 
						
							| 50 |  | nfcvf2 |  | 
						
							| 51 | 50 | 3ad2ant3 |  | 
						
							| 52 | 49 51 | nfeqd |  | 
						
							| 53 | 26 52 | nfan1 |  | 
						
							| 54 |  | nfcvd |  | 
						
							| 55 |  | nfcvf2 |  | 
						
							| 56 | 55 | 3ad2ant2 |  | 
						
							| 57 | 54 56 | nfeqd |  | 
						
							| 58 | 9 57 | nfan1 |  | 
						
							| 59 | 47 | anbi1d |  | 
						
							| 60 | 53 59 | exbid |  | 
						
							| 61 | 60 | bibi1d |  | 
						
							| 62 | 58 61 | albid |  | 
						
							| 63 | 53 62 | exbid |  | 
						
							| 64 | 48 63 | imbi12d |  | 
						
							| 65 | 64 | ex |  | 
						
							| 66 | 13 38 65 | cbvald |  | 
						
							| 67 | 9 66 | albid |  | 
						
							| 68 | 5 67 | exbid |  | 
						
							| 69 | 1 68 | mpbii |  | 
						
							| 70 | 69 | 3exp |  | 
						
							| 71 |  | axacndlem2 |  | 
						
							| 72 | 71 | aecoms |  | 
						
							| 73 |  | axacndlem3 |  | 
						
							| 74 | 73 | aecoms |  | 
						
							| 75 |  | nfae |  | 
						
							| 76 |  | simpr |  | 
						
							| 77 | 76 | alimi |  | 
						
							| 78 |  | nd3 |  | 
						
							| 79 | 78 | pm2.21d |  | 
						
							| 80 | 77 79 | syl5 |  | 
						
							| 81 | 80 | axc4i |  | 
						
							| 82 | 75 81 | alrimi |  | 
						
							| 83 | 82 | 19.8ad |  | 
						
							| 84 | 70 72 74 83 | pm2.61iii |  |