C22212323232133313113313331333132313331323132213231312122211321121   >>    C2221232323213331311331333133313231333132313221323131212221132112   <<    C22212323232133313113313331333132313331323132213231312122211321123   >>      C22212323232133313113313331333132313331323132213231312122211321122   >>