1. Arabic and French words ending in L
E.g. Meşgul, gol, rol

2. Arabic words ending in the singular feminine -at
E.g. Saat, vaat

3. Monosyllabic words with a back vowel and ending in two consonants
E.g. Kalp, harf

There aren't many words that do this.

But they always take the soft/front vowels in their suffixes.