C22213331333133313112331323133313331333133313232221123132312321   >>    C2221333133313331311233132313331333133313331323222112313231232   <<    C22213331333133313112331323133313331333133313232221123132312323   >>      C22213331333133313112331323133313331333133313232221123132312322   >>