II

PMA
  dvau         “two”                       Sanskrit
  duy          “two”                       Prakit

IESSG, VISW
  *Y.-p-                                   Proto-IndoEuropean-AfroAsiatic
  *ow-         “duo, be double, 
                fold (to make double)”     Proto-IndoEuropean
  reduced
  *-Y.w in
  *o-Y.w- (oY. > o:) >
  -o:w         dual ending                 Proto-IndoEuropean

  *w-          “duo”                       Proto-IndoEuropean
  vi:-ginti    “twenty”                    Latin
  
  extended with -gh-
  *w-gh-       “boat, carry, road”
  
  with d-preformative
  *d-w-
  dúo          “two”                       Greek
  deúteros     “second”                    Greek
  extended with -y-
  vi           “in two” > “apart”          Sanskrit
  vayá:        “twig”                      Sanskrit
  with d-preformative 
  *dw-y-                                   Proto-IndoEuropean
  zwi:         “twig”                      Old High German
  extended in
  twi:g        “twig”                      Old English
  zwi:g        “twig”                      Old High German

  *Y.-p-                                   Proto-AfroAsiatic
  single redupl.
  Y.&PaP       “fold double”               Jewish Aramaic
  Y.ap         “was doubled”               Syrian
  Y.aPiPå:     “double”                    Syrian
  
  with A-preformative
  'eY.aP       “doubled” v.                Syrian
  'aY.iPå:     “doubled” part.             Syrian

  with w-infix
  Y.åP         “doubled”                   Syrian
               “be double, fold double”    Jewish Aramaic
  Y.i:P        “folded duoble”             Jewish Aramaic

  extended with -y-
  Y.&Pi:       “branches” > “foliage”      Hebrew
  Y.&Pi:       “branches” > “foliage”      Biblical Aramaic

  extended with -s-
  Y.afasa      “he doubled, folded (a thing),
                twisted (his arm or hand),
                wrung (a thing)”           Arabic

  extended with -t-
  Y.afata      “he twisted (a thing)”      Arabic  

CAAA 2:
  tu           “two”                       Ainu
  *d.uwa       “two”                       Proto-Austronesian

NS 180:
  *tu?V        “two”                       Proto-Nostratic
  *(t')q'wE     id.                        Sino-Caucasian
  *(t')q'wE     id.                        Proto-NorthCaucasian
 In Sino-Tigetan and Proto-Yeniseian the original root
 obtained a nasal suffix and lost the dental element of 
 the original cluster:
  *k-nij(s)    “two”                       Sino-Tibetan
  *xï-na        id.                        Proto-Yeniseian
TP:
  If that's how the game is played, we should include 
  ithnan       “two”                       Arabic
  sn            id.                        Proto-Berber

IR 25:
  tq'áw´-s     “two”                       Moses Columbian

  *t'q'u-b     “twins”                     Kartvelian
  
PMA:
  dua-                                     Malay, Dyak, Pulo-Nias, 
                                           Buhui, Fate, Nguna
  duo-                                     Batta, Lamih
  duwa-                                    Sedi, Sunda
  a-dua-                                   Kapampangan
  dalawa -                                 Tagalog
  dava-                                    Mindanao
  tua-                                     Pwele, Siviri
  rua, lua-                                common Melanesian 
                                           and Polynesia

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