C3123223313331322121111331333133313231333132212111133132233121221   >>    C312322331333132212111133133313331323133313221211113313223312122   <<    C3123223313331322121111331333133313231333132212111133132233121223   >>      C3123223313331322121111331333133313231333132212111133132233121222   >>