C11111211113313112113313331333133313231311331333131113331123313221   >>    C1111121111331311211331333133313331323131133133313111333112331322   <<    C11111211113313112113313331333133313231311331333131113331123313223   >>      C11111211113313112113313331333133313231311331333131113331123313222   >>