from,to
MB01,MB02
MB02,MB03
MB02,MB04
MB04,MB05
MB04,MB06
MB06,MB07
MB06,MB08
MB08,MB09
MB08,MB10
MB10,MB11
MB10,MB12
MB12,A101
A101,A102
A101,A103
A103,A104
A103,A105
A105,A106
A105,A107
MB12,MB13
MB13,MB14
MB13,MB15
MB15,MB16
MB15,MB17
MB17,A201
A201,A202
A201,A203
A203,A204
A203,A205
A205,A206
A205,A207
MB17,MB18
MB18,MB19
MB18,MB20