s1 -> s3
s3 -> s1
s1 -> s4
s4 -> s1
s1 -> s5
s5 -> s1
s2 -> s4
s4 -> s2
s2 -> s5
s5 -> s2
s2 -> s6
s6 -> s2
s7 -> s8
s8 -> s7
s3 -> s7
s7 -> s3
s4 -> s7
s7 -> s4
s5 -> s7
s7 -> s5
s6 -> s7
s7 -> s6
s8 -> s9
s9 -> s8
s8 -> s10
s10 -> s8
s8 -> s11
s11 -> s8
s8 -> s12
s12 -> s8
s6 -> s9
s9 -> s6
s8 -> s13
s13 -> s8
s5 -> s13
s13 -> s5
s5 -> s11
s11 -> s5
s14 -> s15
s15 -> s14
s8 -> s14
s14 -> s8
s15 -> s16
s16 -> s15
s15 -> s17
s17 -> s15
s15 -> s18
s18 -> s15
s15 -> s19
s19 -> s15
s9 -> s16
s16 -> s9
s9 -> s17
s17 -> s9
s9 -> s18
s18 -> s9
s11 -> s19
s19 -> s11
s20 -> s21
s21 -> s20
s15 -> s20
s20 -> s15
s21 -> s22
s22 -> s21
s21 -> s23
s23 -> s21
s21 -> s24
s24 -> s21
s21 -> s25
s25 -> s21
s21 -> s26
s26 -> s21
s21 -> s27
s27 -> s21
s16 -> s22
s22 -> s16
s17 -> s22
s22 -> s17
s17 -> s23
s23 -> s17
s18 -> s23
s23 -> s18
s17 -> s25
s25 -> s17
s16 -> s24
s24 -> s16
s18 -> s25
s25 -> s18
s28 -> s29
s29 -> s28
s30 -> s31
s31 -> s30
s32 -> s33
s33 -> s32
s34 -> s35
s35 -> s34
s36 -> s37
s37 -> s36
s38 -> s39
s39 -> s38
s40 -> s41
s41 -> s40
s42 -> s43
s43 -> s42
s44 -> s45
s45 -> s44
s46 -> s47
s47 -> s46
s22 -> s28
s28 -> s22
s24 -> s28
s28 -> s24
s23 -> s32
s32 -> s23
s24 -> s32
s32 -> s24
s24 -> s38
s38 -> s24
s23 -> s42
s42 -> s23
s25 -> s42
s42 -> s25
s25 -> s46
s46 -> s25
s25 -> s32
s32 -> s25
s23 -> s46
s46 -> s23
s23 -> s44
s44 -> s23
s25 -> s44
s44 -> s25
s23 -> s40
s40 -> s23
s25 -> s36
s36 -> s25
s21 -> s30
s30 -> s21
s21 -> s48
s48 -> s21
s21 -> s49
s49 -> s21
s21 -> s51
s51 -> s21
s21 -> s50
s50 -> s21
s24 -> s34
s34 -> s24
s45 -> s52
s52 -> s45
s31 -> s52
s52 -> s31
s49 -> s52
s52 -> s49
s50 -> s52
s52 -> s50
s51 -> s52
s52 -> s51
s48 -> s52
s52 -> s48
s37 -> s52
s52 -> s37
s41 -> s52
s52 -> s41
s35 -> s52
s52 -> s35
s29 -> s52
s52 -> s29
s47 -> s52
s52 -> s47
s43 -> s52
s52 -> s43
s39 -> s52
s52 -> s39
s33 -> s52
s52 -> s33