C111123313121111121111331333133313331333131233133313221323223313231322221   >>    C11112331312111112111133133313331333133313123313331322132322331323132222   <<    C111123313121111121111331333133313331333131233133313221323223313231322223   >>      C111123313121111121111331333133313331333131233133313221323223313231322222   >>