QUADRIBASIC

aa ab ad ai ar as ba bi id is qi si us

aas aba abs ads aid air ais arb arc ars baa bad bar bas bid bis bra bud bur bus cab cad car cis cru cub cud cur dab dib dis dub dui ids qis qua rad rai ras ria rib rid rub sab sac sad sau sib sic sir sri sub suq urb urd

abas abri acid aids airs aqua arbs arcs aria arid asci aura baas bads bard bars baud bias bidi bids bird brad bras bris buds bura burd burs cabs cadi cads caid carb card cars casa crab crib cris crud crus cubs cuds curb curd curs dabs dais darb daub dibs disc drab drib drub dubs duci dura ibis irid iris isba qadi qaid quad quai quid rads raia raid rais rias ribs rids rubs sadi said sard sari scab scad scar scud suba sura surd urbs urds uric ursa