Ninh Bình Province
The consonant clusters that were originally present in Middle Vietnamese (of the 17th century) have been lost in almost all modern Vietnamese varieties (but retained in other closely related Vietic languages). However, some speech communities have preserved some of these archaic clusters: "sky" is with a cluster in Hảo Nho (Yên Mô, Ninh Bình Province) but "trời" in Southern Vietnamese and in Hanoi Vietnamese (initial single consonants , respectively).