Hello everyone, nice to welcome you on our site, this page even has Level 1 answers. I enjoy it =D
Level 1 - YERTSISL
The answer to this puzzle is:
Words: STYLISER, RELISTS, STYLISE, STYLERS, LISTERS, LYRISTS, STILES, ISLETS, LISTER, STYLER, RELIST, RESITS, SLIEST, ISTLES, SLYEST, TRESSY, LITERS, LYRIST, TILERS, LITRES, LYRES, SILTS, RILES, YETIS, TILER, STYLI, SIRES, LYSIS, SLITS, TRESS, SILTY, TREYS, TYERS, SLIER, STYES, ISTLE, SYLIS, TIRLS, RIELS, LYSES, STIES, RELIT, RESIT, LIERS, LITRE, STIRS, TYRES, RITES, ISLES, RILEY, TIERS, LIRE, TRES, SETS, SITS, YETI, RIEL, REIS, LIER, SEIS, LESS, REST, RITE, LETS, LYRE, ISLE, STYE, STIR, SLIT, LEST, TILE, RELY, RILE, TIES, ERST, TREY, SIRE, TIRE, TYRE, LEIS, SILT, LIST, SITE, RISE, SIRS, LIES, LITE, TIER, TEL, ITS, YET, LES, YES, TRY, LIT, TIL, SET, LEI, IRE, STY, TIE, RYE, LIE, SIT, LYE, SER, RES, SLY, LET, SIR, SIS
Bonus words:
STYLISER, RELISTS, STYLISE, STYLERS, LISTERS, LYRISTS, STILES, ISLETS, LISTER, STYLER, RELIST, RESITS, SLIEST, ISTLES, SLYEST, TRESSY, LITERS, LYRIST, TILERS, LITRES, LYRES, SILTS, RILES, YETIS, TILER, STYLI, SIRES, LYSIS, SLITS, TRESS, SILTY, TREYS, TYERS, SLIER, STYES, ISTLE, SYLIS, TIRLS, RIELS, LYSES, STIES, RELIT, RESIT, LIERS, LITRE, STIRS, TYRES, RITES, ISLES, RILEY, TIERS, LIRE, TRES, SETS, SITS, YETI, RIEL, REIS, LIER, SEIS, LESS, REST, RITE, LETS, LYRE, ISLE, STYE, STIR, SLIT, LEST, TILE, RELY, RILE, TIES, ERST, TREY, SIRE, TIRE, TYRE, LEIS, SILT, LIST, SITE, RISE, SIRS, LIES, LITE, TIER, TEL, ITS, YET, LES, YES, TRY, LIT, TIL, SET, LEI, IRE, STY, TIE, RYE, LIE, SIT, LYE, SER, RES, SLY, LET, SIR, SIS