-er a-a a-c a-q aaa aac aae aah aap aaq aar ac- aca acc ace ach acp acq acr aea aec aee aeh aep aeq aer aha ahc ahe ahh ahp ahq ahr ap- apa apc ape aph app apq apr aqa aqc aqp aqr ar- ara arc are arh arp arq arr c-- caa cac cae cah cap caq car cca ccc cce cch ccp ccr ce- cea cec cee ceh cep ceq cer ch- cha chc che chh chp chq chr cpa cpc cpe cph cpp cpq cpr cqa cqc cra crc cre crh crp crq crr eaa eac eae eah eap ear ec- eca ecc ece ech ecq ecr eea eec eee eep eer eha ehc ehe ehh ehp ehr ep- epa epc epe eph epp epq epr eqa eqe eqp eqq era erc ere erh erp erq err haa hac hae hah hap haq har hca hcc hce hch hcp hcr he- hea hec hee heh hep her hha hhc hhe hhh hhp hhr hpa hpc hpe hph hpp hpq hpr hr- hra hrc hre hrh hrp hrr p-p paa pac pae pah pap paq par pca pcc pce pch pcp pcq pcr pea pec pee peh pep per pha phc phe php phq phr ppa ppc ppe pph ppp ppq ppr pqq pqr pra prc pre prh prp prq prr qaa qac qah qap qar qca qcc qcp qec qee qeh qep qhc qpc qpp qpr qqq qra qrc qre qrh qrp ra- raa rac rae rah rap raq rar rca rcc rce rch rcp rcr re- rea rec ree reh rep req rer rh- rha rhc rhe rhh rhp rhr rpa rpc rpe rph rpp rpr rqc rra rrc rrh rrp rrq rrr