C1111133313331323223313331333133313331333131211113313331323133313223311231   >>    C111113331333132322331333133313331333133313121111331333132313331322331123   <<    C1111133313331323223313331333133313331333131211113313331323133313223311233   >>      C1111133313331323223313331333133313331333131211113313331323133313223311232   >>