Incidence matrix
6 * | 2 2 1 1 | 1 3 2 2 4 | 1 1 3 3 a
* 2 | 0 0 3 3 | 0 0 3 3 6 | 1 1 3 3 g
----+---------+------------+--------
2 0 | 6 * * * | 1 1 1 1 0 | 1 1 1 1 ab x
2 0 | * 6 * * | 0 2 0 0 2 | 0 0 2 2 ae q
1 1 | * * 6 * | 0 0 2 0 2 | 1 0 2 1 aq x(8/3)
1 1 | * * * 6 | 0 0 0 2 2 | 0 1 1 2 ah q
----+---------+------------+--------
3 0 | 3 0 0 0 | 2 * * * * | 1 1 0 0 abc x3o = verf(tet)
3 0 | 1 2 0 0 | * 6 * * * | 0 0 1 1 abf xo&#q = verf(trip)
2 1 | 1 0 2 0 | * * 6 * * | 1 0 1 0 abg xo&#x(8/3) = verf(quith)
2 1 | 1 0 0 2 | * * * 6 * | 0 1 0 1 abh xo&#q = verf(trip)
2 1 | 0 1 1 1 | * * * * 12 | 0 0 1 1 aeg ox(8/3)&#q = verf(stop)
----+---------+------------+--------
3 1 | 3 0 3 0 | 1 0 3 0 0 | 2 * * * abcg verf(quitit)
3 1 | 3 0 0 3 | 1 0 0 3 0 | * 2 * * abch verf(tepe)
3 1 | 1 2 2 1 | 0 1 1 0 2 | * * 6 * abfg verf(quithip)
3 1 | 1 2 1 2 | 0 1 0 1 2 | * * * 6 abfh verf(tistodip)
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