-ing dddd didi didu digg digi diii dili dill din- ding dini dinn dint dinu dipl dipn dipp dipt dipu dird dirl dirr dirt diti ditt dlii dlil dlit dlrg dntp dntt dnut dpdt dpin dpll dpni dprg dril drin drip drit drug drui drup drut druu dtdp dtng dtpl dtrl dttp dudd dudu dugu duid duil duin duir duit duli dull dult dulu dung dunn dunt durg duri durn durt duru dutp duul duur duut gdrt gggg ggrn gidd gidi gidl gigg gigi gign gild gilg gili gill gilt ging gini ginn ginu gipi gipp gird girg giri girl girn girr girt giru giur gli- glid glin glip glit glpi gltp glug glui glun glur glut gnin gnip gnit gnrr gnti gntp gpgp gpip gprd gprp grid grig gril grin grip grit grni grrl grrr grug grui grun grur grut gtip gtld gudi gudu gugg gugi gugu guid guil guin guld guli gull gulp gult gulu gund gung gunn gunt gurd gurg guri gurl gurn gurr gurt guru guti gutt gutu idid idig idil idin idir idli idtp idun igil igli iglu igni ignu igri iiii iiit iitr iitt ilin ilir ilit ill- illd illi illp illt ilni ilpr ilud ilut ind- indi indu inid inig init inni innr innu inp- inpi inpp inpt inri intd intg inti intl intn intp intr intu inui inul inun inup ipdi ipid ipil ipin ippr ipri ipur iput irdp iri- irid irig iril irin irip irri irti irtp irul irun itil itin itll itri itup itur iuiu iupp lddp lgdt lgin lgtn lidl ligg ligi lign liig liii liin liir lilg lili lill lilt lilu lind ling linn lint lip- lipi lipl lipp lipu lird lirg liri lirl lirn lirp lirr lirt liru litd liti litl litr litt litu liun liut lldp llll llud lndg lndn lppl lprp lrdd lrdg lrpu lrrr ltng ltnt lttr ludd ludi lugg lugi lugu luin luit luli lull lulu lund lung luni lunn lunt lupi lupu lurd lurg luri lurt luti luup n-ii n-up ndnp ndnt ndpd ndpr ndri ndut ngri ngtn ngur nguu nidd nidi nigg nigt niip niir niit niiu nild nili nill nilp nilt nilu nind ning nini ninl nipr nipt nirt niru niti nitr niur nlgn nlrp nngn nnit nnnn nnpi nnpr nntn npin nppd nppl npri nprt nptn nrpn nrrd nrrl nrtl ntnd ntnu ntpd ntrl ntru nttr ntui nudd nudi nuin nuit nuli null nung nunn nunt nurd nuri nurl nurn nurp nurr nurt nuru nutt nutu pdpn pdpr pgdn pgpu pgup pigg pign pigp pigt pigu piip pil- pild pili pill pilt pilu pind ping pini pinn pinp pint pinu pipi pipp pirg piri pirl pirn pirr piru piti pitr pitt pitu pldn pldt plid plig plin plip plit plnt plpp plri pltg pltt plud plug plup plur pnin pnld pnln pnnl pnpp pntd pntl pntr pnup ppgi ppid ppig ppli pppd pppn pppp ppru pptn pptt ppur pri- prid prig prii prin prlr prnd prnp prpd prrd prri prti prtp prtr prud prut pruu ptld ptpd ptrd ptui pudu pugu puid puig puin puir puit puiu puli pull pulp pult pulu pund pung punt punu pupi pupl pupu pur- purg puri purl purp purr puru put- puti putt putu rgit rgtr ridd ridi rigg rigi rigu riin rill rilp rilu rind ring rinn ripd ripi ripl ripp ripr ript riri riti ritl ritt ritu rldt rlin rlug rndp rnin rnld rnli rnnt rntd rntp rnut rpdp rpii rppn rptd rptn rrrr rrun rtdt rtlt rtnd rttp rudd rudi rudl rudp rugg rugi ruid ruin ruit rull rund rung runi runn runt rupp rupt rurd ruri rurp ruru ruti rutl rutt rutu ruud ruun tdil tdri tidd tigi tigr tiit tiiu tild till tiln tilr tilt tind ting tini tinn tint tinu tip- tipi tipp tipt tipu tird tiri tirl tirr tiru titi titp titt titu tldp tldr tlli tndd tnut tpdu tpir tpld tppd tppp tppr tptp tptr tput tri- trig tril trin trip trit trng trpg trpn trpp trtr trud trug trun trut truu tttt ttul tudi tudu tugg tugu tuig tuil tuin tuit tuiu tuli tull tulp tulu tund tung tuni tunn tunu tupi tupu turd turg turi turn turp turr turt turu tuti tutl tutt tutu u-rp uddi udid udig udin udir udpd udun uggt ugli ugni ugri ugur uguu uint uipi uirr ulli ullr ulti ultt ulul undi ungp ungu uni- unii unin unir unit unlp unni unut upin upnp uppp uppu upri uptl upup urdu urgi urgu urin uriu urni urri urun urup urur urut utid util utin utpd utri utti uttu utug uulu uuni uuri uuuu