a-a a-b aaa aab aae aah aak aan aas ab- aba abb abe abh abk abn abs aea aeb aee aeh aek aen aes aha ahb ahe ahh ahk ahn ahs aka akb ake akh akk akn aks an- ana anb ane anh ank ann ans as- asa asb ase ash ask asn ass baa bab bae bah bak ban bas bba bbb bbe bbh bbk bbn bbs be- bea beb bee beh bek ben bes bha bhb bhe bhh bhk bhs bka bkb bke bkk bkn bks bna bnb bne bnk bnn bns bsa bsb bse bsh bsk bsn bss eaa eab eae eah eak ean eas eba ebb ebe ebh ebk ebn ebs eea eeb eee eek een ees eha ehb ehe ehh ehn ehs eka ekb eke ekh eks en- ena enb ene enh enk enn ens es- esa esb ese esh esk esn ess haa hab hae hah hak han has hba hbb hbe hbh hbk hbn hbs he- hea heb hee heh hek hen hes hha hhb hhe hhh hhk hhn hhs hka hkb hkh hkk hkn hks hna hnb hne hnh hnk hnn hns hsa hsb hse hsh hsk hsn hss ka- kaa kab kae kah kak kan kas kba kbb kbe kbh kbk kbn kbs ke- kea keb kee keh kek ken kes kha khe khh khk khn khs kkb kke kkh kkk kkn kks kn- kna kne knk knn ksa ksb kse ksh ksk ksn kss naa nab nae nah nak nan nas nba nbb nbe nbk nbn nbs ne- nea neb nee neh nek nen nes nha nhb nhe nhh nhk nhn nhs nka nke nkk nkn nks nna nnb nne nnh nnk nnn nns nsa nsb nse nsh nsk nsn nss saa sab sae sah sak san sas sba sbb sbe sbh sbk sbn sbs se- sea seb see seh sek sen ses sh- sha shb she shh shk shn shs sk- ska skb ske skh skk sks sna snb sne snk snn sns ss- ssa ssb sse ssh ssk ssn sss