C22212323232133313113313331333132313331323132213231312121231323121   >>    C2221232323213331311331333133313231333132313221323131212123132312   <<    C22212323232133313113313331333132313331323132213231312121231323123   >>      C22212323232133313113313331333132313331323132213231312121231323122   >>