TETRACYCLIC

ae ai al ar at ay el er et it la li re ta ti ya ye

ace act ail air ait ale alt arc are art ate att aye car cat cay cel cry ear eat era eta ice icy ire lac lar lat lay lea lei let ley lie lit lye rai rat ray rec rei ret ria rya rye tae tar tat tea tel tet tic tie til tit try tye yar yea yet

acre acyl aery airt airy alec alit aril arty aryl care carl cart cate ceca ceil celt cire cite city clay crit earl etic eyra ilea lace lacy laic lair lari late lati lear liar lice lier lira lire lite lyre race racy rail rale rate real rely rial rice riel rile rite tace tact tael tail talc tale tali tare tart tate teal tear teat tela tier tile tilt tire tirl tray tret trey tyer tyre yare year yeti yett