FUNDAMENTAL CYCLE BASIS Null graph Singleton graph Single vertex with loop ( 0 ) Tree 2-cycle ( 0 1 ) Disconnected ( 1 0 2 ) ( 4 5 ) ( 3 5 ) ( 7 6 10 ) ( 8 10 9 ) ( 11 ) ( 13 ) MINIMUM WEIGHT CYCLE BASIS Null graph Singleton graph Single vertex with loop ( 0 ) Tree 2-cycle ( 0 1 ) Disconnected ( 11 ) ( 13 ) ( 3 5 ) ( 4 5 ) ( 0 1 2 ) ( 6 7 10 ) ( 8 9 10 ) Periodic (5,6)-grid ( 0 1 10 3 ) ( 0 51 50 53 ) ( 1 8 9 18 ) ( 2 3 12 5 ) ( 2 53 52 55 ) ( 4 5 14 7 ) ( 4 55 54 57 ) ( 6 7 16 9 ) ( 6 57 56 59 ) ( 8 59 58 51 ) ( 10 11 20 13 ) ( 11 18 19 28 ) ( 12 13 22 15 ) ( 14 15 24 17 ) ( 16 17 26 19 ) ( 20 21 30 23 ) ( 21 28 29 38 ) ( 22 23 32 25 ) ( 24 25 34 27 ) ( 26 27 36 29 ) ( 30 31 40 33 ) ( 31 38 39 48 ) ( 32 33 42 35 ) ( 34 35 44 37 ) ( 36 37 46 39 ) ( 40 41 50 43 ) ( 41 48 49 58 ) ( 42 43 52 45 ) ( 44 45 54 47 ) ( 0 8 6 4 2 ) ( 1 51 41 31 21 11 )