C2221333133313331311233132313331333133313331323312113313233233232221   >>    C222133313331333131123313231333133313331333132331211331323323323222   <<    C2221333133313331311233132313331333133313331323312113313233233232223   >>      C2221333133313331311233132313331333133313331323312113313233233232222   >>