C2221333133313331311233132313331333133313331323121111133311232321211   >>    C222133313331333131123313231333133313331333132312111113331123232121   <<    C2221333133313331311233132313331333133313331323121111133311232321213   >>      C2221333133313331311233132313331333133313331323121111133311232321212   >>