ngg ngh ngi ngl ngm ngn ngo ngs nhb nhc nhe nhg nhh nhi nhl nhm nhn nhs nib nic nie nig nih nii nil nim nin nio nis nlb nlc nle nlg nlh nli nll nlm nln nlo nls nmb nmc nme nmg nmh nmi nml nmm nmn nmo nms nnb nnc nne nng nnh nni nnl nnm nnn nno nns no- nob noc noe nog noh noi nol nom non noo nos nsb nsc nse nsg nsh nsi nsl nsm nsn nso nss o-i ob- obb obc obe obg obh obi obl obm obn obo obs oc- ocb occ ocg och oci ocl ocm ocn oco ocs oeb oec oee oeg oeh oei oel oem oen oeo oes ogc oge ogg ogh ogi ogl ogn ogo ogs ohc ohe ohg ohh ohi ohl ohm ohn oho ohs oib oic oie oii oil oim oin oio ois olb olc ole olg oli oll olm oln olo ols om- omb omc ome omg omh omi oml omm omn omo oms on- onb onc one ong onh oni onl onn ono ons oo- oob ooc oog ooh ooi ool oom oon ooo oos os- osb osc ose osg osh osi osl osm osn oso oss sbb sbc sbe sbg sbh sbi sbl sbm sbn sbo sbs scb scc sce scg sch sci scl scm scn sco scs se- seb sec see seg seh sei sel sem sen seo ses sgb sgc sge sgg sgh sgi sgl sgm sgn sgo sgs sh- shb shc she shg shh shi shl shm shn sho shs sib sic sie sig sih sii sil sim sin sio sis slb slc sle slg slh sli sll slm sln slo sls smb smc sme smg smh smi sml smm smn smo sms snb snc sne sng sni snl snm snn sno sns sob soc soe sog soh soi sol som son soo sos ss- ssb ssc sse ssg ssh ssi ssl ssm ssn sso sss