C222123232321333131133133313331323133313232211212123313222223221   >>    C22212323232133313113313331333132313331323221121212331322222322   <<    C222123232321333131133133313331323133313232211212123313222223223   >>      C222123232321333131133133313331323133313232211212123313222223222   >>