s95 <-> s93
s94 <-> s92
s91 + s93 <-> s110
s110 <-> s112
s111 + s112 <-> s113
s113 <-> s114 + s93
s98 -> s91
s114 -> s111 + s98
s115 -> s106
s108 -> s115
s103 -> s102
s102 -> s103
s97 -> s101
s101 -> s97
s96 -> s100
s100 -> s96
s99 -> s104
s104 -> s99
s106 -> s35
s37 -> s51
s38 -> s39
s43 -> s100
s100 -> s43
s44 -> s104
s104 -> s44
s42 -> s107
s107 -> s42
s105 -> s49