C11111211113313112113313331333133313331333131211111211113313331333221323223311   >>    C1111121111331311211331333133313331333133313121111121111331333133322132322331   <<    C11111211113313112113313331333133313331333131211111211113313331333221323223313   >>      C11111211113313112113313331333133313331333131211111211113313331333221323223312   >>