C3123223313331322121111331333133313231333132212111133133112212121   >>    C312322331333132212111133133313331323133313221211113313311221212   <<    C3123223313331322121111331333133313231333132212111133133112212123   >>      C3123223313331322121111331333133313231333132212111133133112212122   >>