C22212323232133313113313331333132313331323231323323233121113121   >>    C2221232323213331311331333133313231333132323132332323312111312   <<    C22212323232133313113313331333132313331323231323323233121113123   >>      C22212323232133313113313331333132313331323231323323233121113122   >>