C31232233133313221211113313331333133313113311331333133313331333231333132231231   >>    C3123223313331322121111331333133313331311331133133313331333133323133313223123   <<    C31232233133313221211113313331333133313113311331333133313331333231333132231233   >>      C31232233133313221211113313331333133313113311331333133313331333231333132231232   >>