C131121333133313233213331333133313331333132333133313331311112131   >>    C13112133313331323321333133313331333133313233313331333131111213   <<    C131121333133313233213331333133313331333132333133313331311112133   >>      C131121333133313233213331333133313331333132333133313331311112132   >>