C222123232321333131133133313331323133313231322132313121312323111   >>    C22212323232133313113313331333132313331323132213231312131232311   <<    C222123232321333131133133313331323133313231322132313121312323113   >>      C222123232321333131133133313331323133313231322132313121312323112   >>