C222123232321333131133133313331323133313231323231312323232213212121   >>    C22212323232133313113313331333132313331323132323131232323221321212   <<    C222123232321333131133133313331323133313231323231312323232213212123   >>      C222123232321333131133133313331323133313231323231312323232213212122   >>