Starting with A:
ab, ac, ad, ae, af, ag, ah, ai, aj, ak, al, am, an, ao, ap, aq, ar, as, at, au, av, aw, ax, ay, az.
Starting with E:
ea, eb, ec, ed, ef, eg, eh, ei, ej, ek, el, em, en, eo, ep, eq, er, es, et, eu, ev, ew, ex, ey, ez.
Starting with I:
ia, ib, ic, id, ie, if, ig, ih, ij, ik, il, im, in, io, ip, iq, ir, is, it, iu, iv, iw, ix, iy, iz.
Starting with O:
oa, ob, oc, od, oe, of, og, oh, oi, oj, ok, ol, om, on, op, oq, or, os, ot, ou, ov, ow, ox, oy, oz.
Starting with U:
ua, ub, uc, ud, ue, uf, ug, uh, ui, uj, uk, ul, um, un, uo, up, uq, ur, us, ut, uv, uw, ux, uy, uz.
Starting with Y:
ya, yb, yc, yd, ye, yf, yg, yh, yi, yj, yk, yl, ym, yn, yo, yp, yq, yr, ys, yt, yu, yv, yw, yx, yz.
Ending with A:
ba, ca, da, fa, ga, ha, ja, ka, la, ma, na, pa, qa, ra, sa, ta, va, wa, xa, za.
Ending with E:
be, ce, de, fe, ge, he, je, ke, le, me, ne, pe, qe, re, se, te, ve, we, xe, ze.
Ending with I:
bi, ci, di, fi, gi, hi, ji, ki, li, mi, ni, pi, qi, ri, si, ti, vi, wi, xi, zi.
Ending with O:
bo, co, do, fo, go, ho, jo, ko, lo, mo, no, po, qo, ro, so, to, vo, wo, xo, zo.
Ending with U:
bu, cu, du, fu, gu, hu, ju, ku, lu, mu, nu, pu, qu, ru, su, tu, vu, wu, xu, zu.
Ending with Y:
by, cy, dy, fy, gy, hy, jy, ky, ly, my, ny, py, qy, ry, sy, ty, vy, wy, xy, zy.