added helix H1 length: 7
5' end [1, 2, 3, 4, 5, 6, 7]
3' end [72, 71, 70, 69, 68, 67, 66]

added helix H2 length: 4
5' end [10, 11, 12, 13]
3' end [25, 24, 23, 22]

added helix H3 length: 5
5' end [27, 28, 29, 30, 31]
3' end [43, 42, 41, 40, 39]

added helix H4 length: 5
5' end [49, 50, 51, 52, 53]
3' end [65, 64, 63, 62, 61]

added loop L1 length: 8
5' end [10, 11, 12, 13]
loop          [14, 15, 16, 17, 18, 19, 20, 21]
3' end [25, 24, 23, 22]

added loop L2 length: 7
5' end [27, 28, 29, 30, 31]
loop          [32, 33, 34, 35, 36, 37, 38]
3' end [43, 42, 41, 40, 39]

added loop L3 length: 7
5' end [49, 50, 51, 52, 53]
loop          [54, 55, 56, 57, 58, 59, 60]
3' end [65, 64, 63, 62, 61]

added junction J1 length: 2
5' end [1, 2, 3, 4, 5, 6, 7]
junction        [8, 9]
3' end [10, 11, 12, 13]

added junction J2 length: 1
5' end [22, 23, 24, 25]
junction        [26]
3' end [27, 28, 29, 30, 31]

added junction J3 length: 5
5' end [39, 40, 41, 42, 43]
junction        [44, 45, 46, 47, 48]
3' end [49, 50, 51, 52, 53]

added end E1 length: 4
helix [66, 67, 68, 69, 70, 71, 72]
end      [73, 74, 75, 76]