C31232233133313221211113313331333132313331333133313223313221231   >>    C3123223313331322121111331333133313231333133313331322331322123   <<    C31232233133313221211113313331333132313331333133313223313221233   >>      C31232233133313221211113313331333132313331333133313223313221232   >>