C31232233133313221211113313331333132313331211113313331312132322221   >>    C3123223313331322121111331333133313231333121111331333131213232222   <<    C31232233133313221211113313331333132313331211113313331312132322223   >>      C31232233133313221211113313331333132313331211113313331312132322222   >>