Here's what rhymes with ctpi.
by die buy tie bi bye dye pi pie thai dei ty tai my high why dry lie thy try y guy vi hi shy sigh chi fi hy nigh spy thigh vie goodbye ly ply psi quae rye wir awry hai lye mai muy nai pry tri trie wry cy fy kai lai luy mei pri sy thei wai phi sty stye apply cry fly sky deny defy fry sly belie pupae untie codify spry amebae turfy overbuy slier supply reply thereby imply nearby occupy rely whereby comply hereby modify notify alibi decry typify amoebae edify overlie aquae bonsai deify ossify retry triply stupefy lanai ripply banzais justify qualify testify butterfly certify glorify gratify quantify underlie fortify pacify ratify standby beautify lullaby termini terrify descry mollify mortify blowfly horrify petrify overfly scurfy barfly prettify shanghai beatify drachmai speechify dandify yuppify identify satisfy clarify multiply nuclei specify alkali classify signify verify purify amplify magnify nullify rectify samurai unify falsify crucify dignify liquefy oversupply ramify resupply vilify acidify firefly mystify stratify stultify ultrahigh vivify calcify misapply liquify scarify versify hyperbolae mummify vitrify gentrify stimuli simplify alveoli diversify solidify objectify personify demystify detoxify preoccupy reunify cumuli dissatisfy refortify syllabify exemplify intensify disqualify indemnify dragonfly electrify emulsify reclassify revivify declassify misidentify solemnify oversimplify transmogrify