C22212323232133313113313331333132313331323132213231312112121121   >>    C2221232323213331311331333133313231333132313221323131211212112   <<    C22212323232133313113313331333132313331323132213231312112121123   >>      C22212323232133313113313331333132313331323132213231312112121122   >>