QUADRAPHONIC

aa ad ah ai an ar do ha hi ho id in na no nu od oh oi on op or pa pi qi uh un up

aah ado aha ahi aid ain air ana and ani apo arc cad can cap car chi cod con cop cor cru cud cup cur dah dan dap din dip doc don dor duh dui dun duo dup had hao hap hic hid hin hip hod hon hop hun hup ich ion nah nap nip nod noh nor oar oca oda ora orc oud our pac pad pah pan par phi pia pic pin piu pod poh poi pro pud pun pur qua rad rah rai ran rap rho ria rid rin rip roc rod run udo upo urd urn urp

acid airn anoa apod aqua arch arco aria arid aura cadi caid cain caph capo card carn carp chad chai chao chap char chia chid chin chip chon chop ciao cion coda coin coir coni cord corn coup crap crop crud curd curn darn dino dona dopa dorp dour drip drop duci dura durn duro haar hair hand hard harp hind hoar hora horn hour huic icon inch inro iron nada naoi napa narc nard nipa nodi noir nori nurd odah odic ohia opah orad orca ouch ouph paca padi paid pain pair para pard phon pian pica pina pion pirn pond porn pour prao prau proa prod puna puri qadi qaid qoph quad quai quid quin quip quod raia raid rain rand rani rich rind road roan roup ruin udon unai unci unco undo updo upon uric