C11111211113313112113313331333131133133313222313331323221323222221   >>    C1111121111331311211331333133313113313331322231333132322132322222   <<    C11111211113313112113313331333131133133313222313331323221323222223   >>      C11111211113313112113313331333131133133313222313331323221323222222   >>