C31232233133313221211113313331333132313331211113313331333313231211   >>    C3123223313331322121111331333133313231333121111331333133331323121   <<    C31232233133313221211113313331333132313331211113313331333313231213   >>      C31232233133313221211113313331333132313331211113313331333313231212   >>