1930 | 1934 | 1938 | 1950 | 1954 | 1958 | 1962 | 1966 | 1970 | 1974 | 1978 | 1982 | 1986 | 1990 | 1994 | 1998 | 2002 | 2006 | 2010
... include prefixes, suffixes, infixes, and reduplication. Also extremely common is vowel gradation; every root has (not necessarily all distinct) zero, guna[?], an ...