[n]1[n]c2[n](C)[nH]cc-2c1
 0 1 0 1 1 0 0 0 3
c1oc2[n][n]cc-2cc1
 1 1 1 0 0 0 0 1 0
[n]1[nH]ccc2c[n][n]c1-2
 0 0 0 1 0 0 1 1 1
c12[n][n][n]c-1[nH]ccc2
 0 1 1 1 1 0 0 0 0