x1 = S1
x2 = DNA0000
x3 = DNA0001
x4 = DNA0010
x5 = DNA0100
x6 = DNA1000
x7 = DNA1100
x8 = DNA1010
x9 = DNA1001
x10 = DNA0110
x11 = DNA0101
x12 = DNA0011
x13 = DNA1110
x14 = DNA1011
x15 = DNA1101
x16 = DNA0111
x17 = DNA1111
x18 = DNA001_1
x19 = DNA01_10
x20 = DNA01_11
x21 = DNA011_1
x22 = DNA01_1_1
x23 = DNA101_1
x24 = DNA1_100
x25 = DNA1_101
x26 = DNA1_110
x27 = DNA11_10
x28 = DNA1_1_10
x29 = DNA1_111
x30 = DNA11_11
x31 = DNA111_1
x32 = DNA1_1_11
x33 = DNA1_11_1
x34 = DNA11_1_1
x35 = DNA1_1_1_1