ت followed by ث
Syriac taw
In the Syriac alphabet, as in the Hebrew and Phoenician alphabets, taw (ܬܰܐܘ‎) or tăw (ܬܲܘ‎ or ܬܰܘ‎) is the final letter in the alphabet, most commonly representing the voiceless dental stop [t̪] and fricative [θ] consonant pair, differentiated phonemically by hard and soft markings.  When left as unmarked ܬ‎ ܬ‎ ܬ‎ or marked with a qūššāyā dot above the letter ܬ݁‎ ܬ݁‎ ܬ݁‎ indicating 'hard' pronunciation, it is realized as a plosive /t/. When the phoneme is marked with a rūkkāḵā dot below the letter ܬ݂‎ ܬ݂‎ ܬ݂‎ indicating 'soft' pronunciation, the phone is spirantized to a fricative /θ/. Hard taw (taw qšīṯā) is Romanized as a plain t, while the soft form of the letter (taw rakkīḵtā) is transliterated as ṯ or th.