C2221333133313331311233132313331333133313331322231333133313233322121   >>    C222133313331333131123313231333133313331333132223133313331323332212   <<    C2221333133313331311233132313331333133313331322231333133313233322123   >>      C2221333133313331311233132313331333133313331322231333133313233322122   >>