C2221333133313331311233132313331333133313331323211113313112112121   >>    C222133313331333131123313231333133313331333132321111331311211212   <<    C2221333133313331311233132313331333133313331323211113313112112123   >>      C2221333133313331311233132313331333133313331323211113313112112122   >>