C22212323232133313113313331333133313113313121223323232132232321   >>    C2221232323213331311331333133313331311331312122332323213223232   <<    C22212323232133313113313331333133313113313121223323232132232323   >>      C22212323232133313113313331333133313113313121223323232132232322   >>