C22212323232133313113313331333132313331323133313331213132323212212323221   >>    C2221232323213331311331333133313231333132313331333121313232321221232322   <<    C22212323232133313113313331333132313331323133313331213132323212212323223   >>      C22212323232133313113313331333132313331323133313331213132323212212323222   >>