Does this graph contain a 4-clique? 47 26 17 60 53 34 48 55 62 72 18 40 27 67 T7 31 44 15 35 67 23 40 74 21 68 A 32 54 78 45 14 58 73 66 38 33 50 24 43 70 11 36 63 80 19 76 28 41. 16 25 6 56 64 39 51 69 2 13 57 22 65 46 75 12 20 37 52 29 79 7 42 59 71