C222123232321333131133133313331323133313231323231312323221223211   >>    C22212323232133313113313331333132313331323132323131232322122321   <<    C222123232321333131133133313331323133313231323231312323221223213   >>      C222123232321333131133133313331323133313231323231312323221223212   >>