C11111211113313112113313331333133313331333131211113313331333132223123221   >>    C1111121111331311211331333133313331333133313121111331333133313222312322   <<    C11111211113313112113313331333133313331333131211113313331333132223123223   >>      C11111211113313112113313331333133313331333131211113313331333132223123222   >>