   C12
    O2
   C13
    O3
   C14
    O4
    P4
  OP42
  OP43
  OP44
   C15
    O5
    P5
  OP52
  OP53
  OP54
   C16
    O6
   C11
     P
   O13
   O14
   O12
   O11
    C1
    C2
   O21
   C21
   O22
   C22
    C3
   O31
   C31
   O32
   C32
   C23
   C24
   C25
   C26
   C27
   C28
   C29
  C210
  C211
  C212
  C213
  C214
  C215
  C216
  C217
  C218
  C219
  C220
   C33
   C34
   C35
   C36
   C37
   C38
   C39
  C310
  C311
  C312
  C313
  C314
  C315
  C316
  C317
  C318
