Atom, aqua, aide,
I assume you mean "WORDS" that start with hel and have 4 letters...three easy ones are: helD helM helP Another possibility is: helL
There are 4 letter words such as taxi and maxi that end with the letters xi. However, there are no four letter words that start with the letters xi.
Some words that start with the letters tr:tracetracktradetrailtraintramptraptrashtraveltraytreadmilltreattreetrendtriadtrialtribetricktricycletriptripodtrolleytrooptrophytrouserstrucetrucktruetrulytrumptrusttruth
Words that start with the letters "bal-" include:balancebalconybaloney
Words that start with the letters "nee-" include:needneedsneedleneedlesneedling
Some words that start with the letters too:tooltoolboxtoolmakertoolshedtoottoothtoothachetoothbrushtoothpastetoothpicktootsie
Words that start with the letters 'ew' are ewe and ewer.
Oboe, ogle, once and ooze are 4 letter words. They begin with the letter o.
Words that begin with the letters en:enableenactendowenamelenchantedenchiladaencircleencloseencoreencounterencourageencroachencumberencyclicalendendangerendiveendorseendowendowmentendureenemyenergeticenergyenforceengageengineenhanceenigmaenjoyenlargeenlistenquireenrollensueentailentangleenterentertainenticeentitleentityentranceentryenvelopeenviousenvoy
Words that start with the letters 'ic' are:iceicebergiceboaticeboundiceboxicebreakericecapicemanichthyologyicicleicingickyiconiconoclasticonographyicy
Words that can be made from the letters in START are:aartasatratstartatartarttat
No English words start with the letters "jy."