C111123313331323113313331333133313331323112133313331333121111133313331313321   >>    C11112331333132311331333133313331333132311213331333133312111113331333131332   <<    C111123313331323113313331333133313331323112133313331333121111133313331313323   >>      C111123313331323113313331333133313331323112133313331333121111133313331313322   >>