C22212323232133313113313331333133313231323133313332311333132223232311   >>    C2221232323213331311331333133313331323132313331333231133313222323231   <<    C22212323232133313113313331333133313231323133313332311333132223232313   >>      C22212323232133313113313331333133313231323133313332311333132223232312   >>