C2221333133313331311233132313331333133313331323121111121111132333133313132211   >>    C222133313331333131123313231333133313331333132312111112111113233313331313221   <<    C2221333133313331311233132313331333133313331323121111121111132333133313132213   >>      C2221333133313331311233132313331333133313331323121111121111132333133313132212   >>