2char List (incomplete)

__, _-, -_, --, -1, -2, -a, 00, 01, 02, 03, 04, 05, 06, 07, 08, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 2a, 2k, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 3d, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,62, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, aa, 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, ba, bb, bc, bd, be, bf, bg, bh, bi, bj, bk, bl, bm, bn, bo, bp, bq, br, bs, bt, bu, bv, bw, bx, by, bz, ca, cb, cc, cd, ce, cf, cg, ch, ci, cj, ck, cl, cm, cn, co, cp, cq, cr, cs, ct, cu, cv, cw, cx, cy, cz, da, db, dc, dd, de, df, dg, dh, di, dj, dk, dl, dm, dn, do, dp, dq, dr, ds, dt, ea, ed, ee, eg, en, eq, er, ev, ew, ex, ez, ff, fr, fw, fx, g0, g1, g2, g3, gg, gn, go, ha, hd, he, hg, hh, hi, hj, hk, hm, hp, id, if, ii, il, im, in, io, ip, iq, is, it, ja, jb, je, ji, jj, jk, jm, jr, js, kk, ko, lb, le, lg, li, lk, ll, lo, lt, lu, lv, ly, mc, md, me, mf, mi, mj, mk, ml, mm, mn, mo, mr, my, nb, ng, nn, no, nz, oc, of, og, oh, oi, oj, ok, on, oo, op, or, os, ox, pd, pi, pn, pp, pq, pr, ps, qa, qe, qi, qq, qw, qz, rf, rg, rm, rn, rr, sa, sc, sd, sg, so, ss, st, tb, tm, tn, to, ts, tt, tu, tv, ty, uh, ui, uk, um, up, us, uu, vb, zj

Any 2char that comments will be highlighted!

Progress: underscores, hyphens, 2num.