ar po angielsku:

I afterward sold them to enable me to buy R. Burton's Historical Collections.

I like R & B.

You can always count on him, He's very r........

He can usually find the solutions to problems.

r for fose

For the sake of completeness, let us mention that the ring R - considered as a module over itself - has submodules of arbitrarily large finite length.

The Esperanto alphabet has 28 letters: a, b, c, ĉ, d, e, f, g, ĝ, h, ĥ, i, j, ĵ, k, l, m, n, o, p, r, s, ŝ, t, u, ŭ, v, z.