C22212323232133313113313331333133313231323132222123121112112111   >>    C2221232323213331311331333133313331323132313222212312111211211   <<    C22212323232133313113313331333133313231323132222123121112112113   >>      C22212323232133313113313331333133313231323132222123121112112112   >>