C11111211113313112113313331333133313331333131211113313331323221333122311   >>    C1111121111331311211331333133313331333133313121111331333132322133312231   <<    C11111211113313112113313331333133313331333131211113313331323221333122313   >>      C11111211113313112113313331333133313331333131211113313331323221333122312   >>