a-ha aaaa aaab aaac aaad aaah aaap aaba aabb aabc aabd aabh aabp aaca aacb aacc aacd aach aacp aada aadc aaha aapa aapc aaph abaa abab abac abad abap abb- abba abbb abca abcb abcc abcd abch abcp abda abha abpa abpc abpd abpp acaa acab acac acad acap acba acca accc accd acch accp acda acdb acdc acdp acha achh achp acpa acpd adaa adab adac adad adah adap adba adbc adcc adda addc addd adha adhd adp- adq- ahab ahac ahad ahah ahaq ahha apac apah apap apba apca apcb apcc apcd apda apdd aph- apha aphc appa appc appd apph aqap aqda baaa baad baah baba babb bac- baca bacc bach bada badb badd badh baha bapa bapc bapp baqa bbad bbbb bbbq bbch bbdd bcaa bcap bcbc bcbp bcca bccc bcda bchd bcpp bdbc bddc bddh bdpc bhca bhcc bpcp bpda bphc c-cd caaa caab caac caah caap caba cac- caca cacc cach cada cadc cadd caha capa capb capc capd caph capp caqh cbac cbbc cbca cbcc cbcp cbdb cbdc cbha cbpc cbpp ccaa ccab ccac ccad ccap ccba ccbc ccca cccb cccc cccp ccdc ccdh ccdp ccha cchp ccpa ccpp cdaa cdac cdad cdba cdda cddb chaa chab chac chad chah chap chbp chca chch chcp chha chpa chpp cpaa cpac cpad cpap cpbc cpca cpha cppa cppd daab daad daap daba dabb dabp daca dada daha dahp dapa dapp dbcc dbcp dbpc dbpd dcbc dcca dccb dccc dccp dcdb dchq dddd dhaa dhad dhap dhbp dhcp dhqd dpaa dpac dpbc dpcp dphp dppa dppc dpph dqcd dqdb haab haad haba hada hadh haha hapa happ hbcd hcap hcbc hcca hccb hccc hcch hcpc hdca hdda hhaa hhhh hhpa hhpc hpac hpcc hpdh hqac paap paba paca pacd pach pada padd paha pahp papa papb papp pbac pbcc pbpa pcaa pcad pcap pcba pcbc pcca pccc pcha pchp pcpb pcpp pdac pdca pdcp pdpa phad phah phcc phpa ppac ppad ppap ppcc ppcd pppa pppd pppp pqcc qa-c qada qaha qcad qppb qqqq