C3132121111133313233121111331333133313331322331333132332313231231   >>    C313212111113331323312111133133313331333132233133313233231323123   <<    C3132121111133313233121111331333133313331322331333132332313231233   >>      C3132121111133313233121111331333133313331322331333132332313231232   >>