The Tungusic words are found in all the languages of the group: Evenki bolo, Even boloni,
Negidal bolo, Orochi bolo, Udehe bolo, Ulchi bolo, Orok bolo, Nanai bolo, Manchu bolori (TMS 1.93-94).
The 54 languages include the following: Abaza, Aghul, Akhvakh, Aleut, Alutor, Andi, Archi, Bagvalal, Bezhta, Botlikh, Chamalal, Chukchee, Chulym, Dolgan, Enets, Even, Evenki, Godoberi, Hinukh, Hunzib, Itelmen, Izhorian, Kaitag, Karata, Kerek, Ket, Khanty, Khvarshi, Koryak, Kubachi, Mansi, Nanai,
Negidal, Nenets, Nganasan, Nivkh, Oroch, Orok, Rutul, Sami, Selkup, Shor, Tat, Tindi, Tofa, Tsakhur, Tsez, Udege, Ulchi, Vepsian, Votian, Yug, Yukaghir, and Yupik.
First, his philological writings on the Tungus Manchurian languages and Siberian peoples (Negidals, Orochs, Ulch, etc.) may be used as comparative material when considering the close links of ancient Korea with this region.
For example, Shirokogorov cited Smits's work regarding the study of Tungusic languages; he used Smits's Language of the Negidals and the Language of the Olchas for comparative purposes.
Cluster 2 (Circumpolar Eurasia): Eastern Sami; Ainu; Dolgan; Sym Evenki; Nganasan; Enets;
Negidals; Mansi; Tundra Nenets; Southern Selkup; Northern Selkup; Ket, Yug; Eastern Khanty (Ostyaks); Northern Khanty; Nivkh; Far East Evenki; Nanai; Udihe; Oroch; Yukaghir; Evens (Lamuts); Baikal Evenki; Western Evenki; Yakut; Wotians; Sorbs;