For example, Allport was able to identify between 4 and 5 thousand possible human traits.
(Allport; was; able to identify between 4 and 5 thousand possible human traits) (Allport; to identify; between 4 and 5 thousand possible human traits)
Allport Allport
was to identify
able to identify between 4 and 5 thousand possible human traits
between 4 and 5 thousand possible human traits