Why is the 'known' list so complex?
Shouldn't the result look like this (see 'Added')?:
(
(
(
((-1187.54 11032.5 -43133.8) a)
((-2506.95 3496.12 0.0) b)
1
)
(
((-1186.62 7937.77 -43133.8) a)
((-2506.03 400.153 0.0) b)
39
)
)
(
(
((1299.61 7929.88 -43133.8) a)
((806.95 11052.0 3133.8) c)
90
)
(
((-1186.62 7937.77 -43133.8) a)
((6506.03 700.153 9.0) c)
39
)
)
( ; Added.
(
((-2506.03 400.153 0.0) b)
((6506.03 700.153 9.0) c)
39
)
)
)