C11111211113313112113313331333133313331333132313331333133313331333132223113111   >>    C1111121111331311211331333133313331333133313231333133313331333133313222311311   <<    C11111211113313112113313331333133313331333132313331333133313331333132223113113   >>      C11111211113313112113313331333133313331333132313331333133313331333132223113112   >>