C31232233133313221211113313331333132313331333133313331333133313311232321321   >>    C3123223313331322121111331333133313231333133313331333133313331331123232132   <<    C31232233133313221211113313331333132313331333133313331333133313311232321323   >>      C31232233133313221211113313331333132313331333133313331333133313311232321322   >>