C22212323232133313113313331333132313331311332313233232233121231   >>    C2221232323213331311331333133313231333131133231323323223312123   <<    C22212323232133313113313331333132313331311332313233232233121233   >>      C22212323232133313113313331333132313331311332313233232233121232   >>