C2221232323213331311331333133313231323133313232212332333133322321   >>    C222123232321333131133133313331323132313331323221233233313332232   <<    C2221232323213331311331333133313231323133313232212332333133322323   >>      C2221232323213331311331333133313231323133313232212332333133322322   >>