Hello everyone, nice to welcome you on our site, this page even has Level 12 answers. I enjoy it =D
Level 12 - YIRTSLCT
The answer to this puzzle is:
Words: YTTRIC, SLITTY, LYRIST, TIRLS, TILTS, STYLI, CRITS, SILTY, LYTIC, STILT, TRYST, SILT, CRIS, CYST, CRIT, TICS, CIST, TITS, SIR, STY, TIT, TIC, SIC, TIL, ITS
Bonus words:
YTTRIC, SLITTY, LYRIST, TIRLS, TILTS, STYLI, CRITS, SILTY, LYTIC, STILT, TRYST, SILT, CRIS, CYST, CRIT, TICS, CIST, TITS, SIR, STY, TIT, TIC, SIC, TIL, ITS