C11111211113313112113313331333133313331312111133133331333133313331323222323221   >>    C1111121111331311211331333133313331333131211113313333133313331333132322232322   <<    C11111211113313112113313331333133313331312111133133331333133313331323222323223   >>      C11111211113313112113313331333133313331312111133133331333133313331323222323222   >>