C22212323232133313113313331333132313331323131331213223312232331   >>    C2221232323213331311331333133313231333132313133121322331223233   <<    C22212323232133313113313331333132313331323131331213223312232333   >>      C22212323232133313113313331333132313331323131331213223312232332   >>