C31232233133313221211113313331333131211113313231333131123323321   >>    C3123223313331322121111331333133313121111331323133313112332332   <<    C31232233133313221211113313331333131211113313231333131123323323   >>      C31232233133313221211113313331333131211113313231333131123323322   >>