3.9.6..8.9.10.

1.3.2. ..1.3.2. ..1.3.2
2.4.3. ..4.1.4. ..2.4.3

+1+1-1.-1+2-1.-1+2-1
+2+2-1.+1-3+3.-2+2-1
A point where continuous
occurs three times.
Once in the beginning
at the end twice.