a-do aaaa aaac aaad aaap aaas aaca aacc aacd aaco aacp aacs aada aadc aads aaoo aapa aapc aapo aaps aasa aasc aasd aass acaa acac acad acap acas acca accc accd acco accp accs acda acdc acdp acds acoa acod acop acos acpa acpd acps acsa acsc acsd acss adaa adac adad adao adap adas adcc adcs adda addc addd addo adds adoc adod adoo ados adp- adps adsa adso adss aoca aocs aopo aosd aosp aoss apac apao apap apas apca apcc apcd apco apcs apda apdd apds apo- apoc apod apoo apop apos appa appc appd apps apsa apso apss asaa asac asad asao asap asas asc- asca ascc asco ascp asda asdo asds asoc asod asop asos aspa aspc aspd aspo asps assa assc assd asso assp asss c-cd caaa caac caap caas cac- caca cacc caco cada cadc cadd cado cads caod caos capa capc capd capo capp caps casa casc casd caso casp cass ccaa ccac ccad ccap ccas ccca cccc cccp cccs ccdc ccdp ccds ccoc ccod ccpa ccpp ccps ccsa ccsd ccsp ccss cdaa cdac cdad cdcs cdda cdos cdps cdss coad coas coca coco cocp coda codd cods cood coop coos copa copd copo copp cops cosa cosc coso cosp coss cpaa cpac cpad cpap cpas cpca cpcs cpos cppa cppd cpps cpsa cpsc cpso csaa csac csao csas cscc cscd csco cscs csda csdp csos cspa cspc cspd csps cssa cssd daad daap daas daca dacs dada dado dads daos dapa dapp daps dasa dasc dasd dass dcas dcca dccc dccp dccs dcds dcop dcos dcpo dcps dcsc dcss dddd ddoc ddpo ddps ddss doap doas doca doco docs dod- doda dodd dodo dods dood doop doos dopa dopo dopp dops dosa doso doss dpaa dpac dpcp dpos dppa dppc dpsd dsac dsap dscc dscp dscs dsda dsdp dsoa dsos dsps dssa dssc dssp oaps oasc oass ocac ocad ocap ocas occa occc ocds ocos ocpa ocpd ocpp ocsa odac odas odda oddd odds odoo odop odos odso ooaa ooda oooo ooos oops oosa opap opca opds opo- opos oppa oppo opps opsa osap osas osca oscc osco osoo osos ossa ossd osso paap paas paca pacd paco pacs pada padd pado pads paoc paos papa papp paps pasa pasc pasd paso pasp pass pcaa pcad pcap pcas pcca pccc pccs pcoa pcod pcos pcpp pcps pcsa pcso pdac pdas pdca pdcp pdoc pdos pdpa pdsa pdsd pdss poad poas poca pocd poco pocs pod- poda podd podo pods pood poop poos pop- popa popc popo popp pops posa poso poss ppac ppad ppap ppcc ppcd ppcs ppds ppoa ppod ppos pppa pppd pppo pppp ppps ppss psac psap psas psca psco psdc psdp psds psoa psoc psos pspp psps pssa pssc psso s-os sa-c saac saad saap saas saca sacc sacd saco sacs sada sadc sadd sado sads saos sapa sapo sapp saps sasa sasc sasd saso sass scaa scac scad scap scas sccc sccp sccs scda scdc scdp scds scoo scop scpa scpo scps scsa scsc scsd scso sdap sdcc sdco sddc sdds sdps sdsc sdss soad soap soas soca soco socs soda sodd sodo sods sood soop soos sopa sopd sopo sopp sops sosa soso soss sp-a spac spad spap spas spca spcc spco spcs spdc spdp spoc spod spoo spop spos sppd spps spsa spsd spso spsp spss ssaa ssac ssao ssap ssas ssca sscc sscp sscs ssdc ssdd ssdp ssoc ssop sspa sspc sspo ssps sssa sssc ssss