C31232233133313221211113313331333132313331322121111112211232222121   >>    C3123223313331322121111331333133313231333132212111111221123222212   <<    C31232233133313221211113313331333132313331322121111112211232222123   >>      C31232233133313221211113313331333132313331322121111112211232222122   >>