-al a-a a-b a-t aaa aab aae aal aap aat ab- aba abb abe abl abp abt aea aeb aee ael aep aet al- ala alb ale all alp alt ap- apa apb ape apl app apt at- ata atb ate atl atp att b-p baa bab bae bal bap bat bba bbb bbe bbl bbp bbt be- bea beb bee bel bep bet bla blb ble bll blp blt bpa bpb bpe bpl bpp bpt bta btb bte btl btp btt eaa eab eae eal eap eat eba ebb ebe ebl ebp ebt eea eeb eee eel eep eet ela elb ele ell elp elt ep- epa epb epe epl epp ept eta etb ete etl etp ett l-p la- laa lab lae lal lap lat lba lbb lbe lbl lbp lbt lea leb lee lel lep let lla llb lle lll llp llt lpa lpb lpe lpl lpp lpt lta ltb lte ltl ltp ltt p-p paa pab pae pal pap pat pba pbb pbe pbl pbp pbt pea peb pee pel pep pet pla plb ple pll plp plt ppa ppb ppe ppl ppp ppt pt- pta ptb pte ptl ptp ptt taa tab tae tal tap tat tba tbb tbe tbl tbp tbt te- tea teb tee tel tep tet tla tle tll tlp tlt tpa tpb tpe tpl tpp tpt tta ttb tte ttl ttp ttt