A a (cat) 【short vowel 短母音】

Some more examples(更多例字):
• CVC (子音-母音-子音): cab, dab, jab, lab, nab, tab, bad, dad, fad, had, lad, mad, pad, sad, tad, bag, gag, jag, lag, nag, rag, sag, tag, wag, cam, dam, ham, jam, ram, yam, Pam, Sam, ban, can, fan, man, pan, ran, tan, van, map, cap, gap, lap, nap, rap, sap, tap, yap, zap, has, gas, bat, cat, fat, hat, mat, pat, rat, sat, vat, act, lax, max, tax, wax

• am, an, as, at, ax, ask, add, blab, slab, crab, drab, grab, clad, glad, and, band, hand, land, bland, gland, brand, grand, sand, stand, strand, apple, chance, dance, glance, France, prance, trance, enhance, flag, shag, snag, brag, drag, zigzag, cash, batch, catch, hatch, latch, match, patch, ranch, branch, scratch, graph, ash, cash, dash, hash, rash, mash, smash, lash, clash, flash, splash, crash, trash, bath, math, path, back, hack, jack, lack, pack, rack, sack, tack, lack, black, clack, slack, snack, stack, crack, track, quack, cask, mask, task, flask, bank, rank, yank, thank, lank, blank, plank, prank, frank, crank, drank, spank, clam, slam, scam, cram, gram, chasm, spasm, than, scan, span, clan, plan, bran, bang, fang, gang, hang, rang, sang, clang, slang, sprang, chap, clap, flap, slap, snap, gasp, grasp, clasp, trap, wrap, strap, camp, damp, lamp, ramp, champ, clamp, cramp, stamp, mass, pass, class, glass, brass, grass, chat, that, flat, fact, pact, tact, waft, raft, craft, graft, ant, pant, pants, plant, chant, scant, slant, rant, grant, cast, fast, last, mast, past, vast, blast, basket, flax, jazz