Decades: 1120s 1130s 1140s 1150s 1160s - 1170s - 1180s 1190s 1200s 1210s 1220s
Years: 1169 1170 1171 1172 1173 - 1174 - 1175 1176 1177 1178 1179
Births
Deaths
... region l^i = l + r^i (Sanskrit recognizes vocalic r (errr) and l (ulll), unlike, say, English) Diphthongs (Combinations of Simple Vowels) e - hay ai - aisle o ...