-up a-a a-b a-i aaa aab aai aan aao aap aar aas aau ab- aba abb abi abn abo abp abr abs abu ai- aia aib aii ain aio aip air ais aiu an- ana anb ani ann ano anp anr ans anu aoa aob aoi aon aoo aop aor aos aou ap- apa apb api apn apo app apr aps apu ar- ara arb ari arn aro arp arr ars aru as- asa asb asi asn aso asp asr ass asu au- aua aub aui aun auo aup aur aus b-p b-u baa bab bai ban bao bap bar bas bau bba bbb bbi bbn bbo bbp bbr bbs bbu bi- bia bib bii bin bio bip bir bis biu bna bnb bni bnn bno bnp bnr bns bnu boa bob boi bon boo bop bor bos bou bpa bpb bpi bpn bpo bpp bpr bps bpu bra brb bri brn bro brp brr brs bru bsa bsb bsi bsn bso bsp bsr bss bsu bua bub bui bun buo bup bur bus buu ia- iaa iab iai ian iao iap iar ias iau iba ibb ibi ibn ibo ibp ibr ibs ibu iia iib iii iin iio iip iir iis iiu in- ina inb ini inn ino inp inr ins inu io- ioa iob ioi ion ioo iop ior ios iou ipa ipb ipi ipn ipo ipp ipr ips ipu ir- ira irb iri irn iro irp irr irs iru is- isa isb isi isn iso isp isr iss isu iu- iua iub iui iup iur ius n-i naa nab nai nan nao nap nar nas nau nba nbb nbi nbn nbo nbp nbr nbs nbu nia nib nii nin nio nip nir nis niu nna nnb nni nnn nno nnp nns nnu no- noa nob noi non noo nop nor nos nou npa npb npi npn npo npp npr nps npu nra nrb nri nrn nro nrp nrr nrs nru nsa nsb nsi nsn nso nsp nsr nss nsu nua nub nui nun nuo nup nur nus nuu o-i oaa oab oai oan oao oap oar oas oau ob- oba obb obi obn obo obp obr obs obu oia oib oii oin oio oip oir ois oiu on- ona onb oni onn ono onp onr ons onu oo- ooa oob ooi oon ooo oop oor oos op- opa opb opi opn opo opp opr ops or- ora orb ori orn oro orp orr ors oru os- osa osb osi osn oso osp osr oss osu ou- oua oui oun ouo oup our ous p-p paa pab pai pan pao pap par pas pau pba pbb pbi pbn pbo pbp pbr pbs pbu pia pib pii pin pio pip pir pis piu pn- pna pnb pni pnn pno pnp pnr pns pnu poa pob poi pon poo pop por pos pou ppa ppb ppi ppn ppo ppp ppr pps ppu pra prb pri prn pro prp prr prs pru ps- psa psb psi psn pso psp psr pss psu pua pub pui pun pup pur pus puu ra- raa rab rai ran rao rap rar ras rau rba rbb rbi rbn rbo rbp rbr rbs rbu ria rib rii rin rio rip rir ris rna rnb rni rnn rno rnp rnr rns rnu roa rob roi ron roo rop ror ros rou rpa rpb rpi rpn rpo rpp rpr rps rpu rra rrb rri rrn rrp rrr rrs rru rsa rsb rsi rsn rso rsp rsr rss rsu rua rub rui run ruo rup rur rus ruu saa sab sai san sao sap sar sas sau sba sbb sbi sbn sbo sbp sbr sbs sbu sia sib sii sin sio sip sir sis siu sna snb sni snn sno snp snr sns snu soa sob soi son soo sop sor sos sou spa spb spi spn spo spp spr sps spu sr- sra srb sri srn sro srp srr srs ss- ssa ssb ssi ssn sso ssp ssr sss ssu sua sub sui sun suo sup sur sus suu ua- uaa uab uai uan uao uap uar uas uau uba ubb ubi ubn ubo ubp ubr ubs ubu uia uib uii uin uio uip uir uis uiu un- una unb uni unn uno unp unr uns unu uoa uob uon uoo uop uor uos up- upa upb upi upn upo upp upr ups upu ur- ura urb uri urn uro urp urr urs uru usa usb usi usn uso usp usr uss usu uua uun uur uus uuu