a-do aaaa aaac aaad aaap aaca aacc aacd aaco aacp aact aada aadc aadt aaoo aapa aapc aapo aapt aata aatc aatt ac-t acaa acac acad acap acat acca accc accd acco accp acct acda acdc acdp acdt acoa acod acop acot acpa acpd acpt acta actc acto actt adaa adac adad adao adap adat adcc adda addc addd addo adoc adod adoo adot adp- adta aoca aopo aotc aotd apac apao apap apat apca apcc apcd apco apda apdd apo- apoc apod apoo apop apot appa appc appd appt apta aptc aptt at-t ataa atac atad atap atat atca atcc atco atdt atoc atod atop atot atta atto attp c-cd caaa caac caap caat cac- caca cacc caco cada cadc cadd cado caod capa capc capd capo capp capt cat- cata catc catd cato catt ccaa ccac ccad ccap ccat ccca cccc cccp ccdc ccdp ccoc ccod ccpa ccpp cctc cctt cdaa cdac cdad cdda cdot coad coat coca coco cocp coct coda codd cood coop coot copa copd copo copp copt cota cotc coto cott cpaa cpac cpad cpap cpca cppa cppd cptp ctca ctcp ctot ctpo ctpp ctta daad daap daca dact dada dado dapa dapp data dato datp datt dcca dccc dccp dcct dcop dcpo dctc dddd ddoc ddot ddpo doap doat doca doco doct dod- doda dodd dodo dood doop doot dopa dopo dopp dopt dota dotd doto dott dpaa dpac dpcp dpdt dppa dppc dtaa dtac dtap dtcc dtdp dtot dttp ocac ocad ocap ocat occa occc occt ocpa ocpd ocpp oct- octa octo odac odda oddd odoo odop odot ooaa ooda oooo ootp opap opca opo- oppa oppo opto otac otap otcd oto- otoo otpp otta otto paap paat paca pacd paco pact pada padd pado paoc papa papp pata patd pato patt pcaa pcad pcap pcca pccc pcoa pcod pcpp pdac pdca pdcp pdoc pdpa pdtc poad poat poca pocd poco pod- poda podd podo pood poop poot pop- popa popc popo popp popt pota potc potd poto pott ppac ppad ppap ppcc ppcd ppoa ppod pppa pppd pppo pppp ppta pptt ptca ptcc ptdc ptop ptpd pttc taa- taat taca tacc taco tact tada tado taoa tapa tapo tapp tapt tata tato tatt tcad tcap tcca tccc tcdd tcpa tcpo tctc tdac tdap toad toat toca toco toda todd todo todt tooa tood toot top- topa topd topo topp topt tota totc totd toto tott tpac tpap tpcd tpcp tppa tppd tppp tptp ttcp ttop tttt