-er -ic -up a-a a-b a-c a-i aaa aab aac aae aai aap aar aas aau ab- aba abb abc abe abi abp abr abs abu ac- aca acb acc ace aci acp acr acs acu aea aeb aec aee aei aep aer aes aeu ai- aia aib aic aie aii aip air ais aiu ap- apa apb apc ape api app apr aps apu ar- ara arb arc are ari arp arr ars aru as- asa asb asc ase asi asp asr ass asu au- aua aub auc aue aui aup aur aus b-p b-u baa bab bac bae bai bap bar bas bau bba bbb bbc bbe bbi bbp bbr bbs bbu bca bcb bcc bce bci bcp bcr bcs bcu be- bea beb bec bee bei bep ber bes beu bi- bia bib bic bie bii bip bir bis biu bpa bpb bpc bpe bpi bpp bpr bps bpu bra brb bre bri brp brr brs bru bsa bsb bsc bse bsi bsp bsr bss bsu bua bub buc bue bui bup bur bus buu c-- caa cab cac cae cai cap car cas cau cba cbb cbc cbe cbi cbp cbr cbs cbu cca ccb ccc cce cci ccp ccr ccs ccu ce- cea ceb cec cee cei cep cer ces ceu ci- cia cib cic cie cii cip cir cis ciu cpa cpb cpc cpe cpi cpp cpr cps cpu cra crb crc cre cri crp crr crs cru csa csb csc cse csi csp csr css csu cua cub cuc cue cui cup cur cus cuu eaa eab eac eae eai eap ear eas eau eba ebb ebc ebe ebi ebp ebr ebs ebu ec- eca ecb ecc ece eci ecr ecs ecu eea eeb eec eee eep eer ees eia eib eic eie eii eip eir eis eiu ep- epa epb epc epe epi epp epr eps epu era erb erc ere eri erp err ers eru es- esa esb esc ese esi esp esr ess esu eu- eua eub euc eue eui eup eur eus ia- iaa iab iac iae iai iap iar ias iau iba ibb ibc ibe ibi ibp ibr ibs ibu ica icb icc ice ici icp icr ics icu ie- iea iec iee iei iep ier ies iia iib iic iie iii iip iir iis iiu ipa ipb ipc ipe ipi ipp ipr ips ipu ir- ira irb irc ire iri irp irr irs iru is- isa isb isc ise isi isp isr iss isu iu- iua iub iuc iue iui iup iur ius p-p paa pab pac pae pai pap par pas pau pba pbb pbc pbe pbi pbp pbr pbs pbu pca pcb pcc pce pci pcp pcr pcs pcu pea peb pec pee pei pep per pes peu pia pib pic pie pii pip pir pis piu ppa ppb ppc ppe ppi ppp ppr pps ppu pra prb prc pre pri prp prr prs pru ps- psa psb psc pse psi psp psr pss psu pua pub puc pue pui pup pur pus puu ra- raa rab rac rae rai rap rar ras rau rba rbb rbc rbe rbi rbp rbr rbs rbu rca rcb rcc rce rci rcp rcr rcs rcu re- rea reb rec ree rei rep rer res reu ria rib ric rie rii rip rir ris rpa rpb rpc rpe rpi rpp rpr rps rpu rra rrb rrc rri rrp rrr rrs rru rsa rsb rsc rse rsi rsp rsr rss rsu rua rub ruc rue rui rup rur rus ruu saa sab sac sae sai sap sar sas sau sba sbb sbc sbe sbi sbp sbr sbs sbu sca scb scc sce sci scp scr scs scu se- sea seb sec see sei sep ser ses seu sia sib sic sie sii sip sir sis siu spa spb spc spe spi spp spr sps spu sr- sra srb src sre sri srp srr srs ss- ssa ssb ssc sse ssi ssp ssr sss ssu sua sub suc sue sui sup sur sus suu ua- uaa uab uac uae uai uap uar uas uau uba ubb ubc ube ubi ubp ubr ubs ubu uca ucb ucc uce uci ucp ucr ucs ucu uea ueb uec uee uei uep uer ues uia uib uic uie uii uip uir uis uiu up- upa upb upc upe upi upp upr ups upu ur- ura urb urc ure uri urp urr urs uru usa usb usc use usi usp usr uss usu uua uuc uue uur uus uuu