C22212323232133313113313331333133313231323132222123121221313231   >>    C2221232323213331311331333133313331323132313222212312122131323   <<    C22212323232133313113313331333133313231323132222123121221313233   >>      C22212323232133313113313331333133313231323132222123121221313232   >>