C3123223313331322121111331333133313121111331323133313331311233132213231   >>    C312322331333132212111133133313331312111133132313331333131123313221323   <<    C3123223313331322121111331333133313121111331323133313331311233132213233   >>      C3123223313331322121111331333133313121111331323133313331311233132213232   >>