3 Self-reciprocal pattern: grandparental terms, either with or without diminutive affixes, are applied to grandchildren--a grandchild being invariably called by the same term which he applies to the speaker
Bifurcate bisexual pattern: four terms, distinguished by both the sex of the grandchild and sex of the connecting relative can be glossed as son's son, son's daughter, daughter's son, and daughter's daughter
Bifurcate pattern: two terms distinguished by the sex of connecting relative can be glossed as son's child and a?odaughter's child (Murdock's M)
Bifurcate speaker's sex pattern: four terms, differentiated by the sex both of the speaker and of the connecting relative can be glossed as son's child (man speaking), son's child (woman speaking), daughter's child (man speaking), and daughter's child (woman speaking) (Murdock's N)
Bisexual pattern: where two terms, distinguished by sex, glossed as grandson and granddaughter
Grandchild (man speaking), son's child (woman speaking), daughter's child (woman speaking) (On Map-Cu-154 termed Three terms )
Maximal differentiation pattern for woman speaker and man speaker. Each has a set of terms for SoSo, SoDa, DaSo, DaDa (Murdock's Y)
Merging pattern: a single undifferentiated term can be glossed as grandchild
Rare pattern between bifurcate and bifurcate bisexual patterns: SoCh, DaSo, and DaDa are distinguished (Murdock's R; On Map Cu-154 termed Inter Bif/Bif Bisexual)
Rare pattern between bifurcate and bifurcate speaker's-sex pattern: distinguishes between SoCh, DaCh woman speaking), and DaCh (man speaking) (Murdock's S; On Maps Cu-153 and Cu-154 termed Inter Bif/Bif SpkrSex A )
Terms are SoCh (man speaking), SoCh (woman speaking) and DaCh (both sexes speaking) (On Maps Cu-153 and Cu-154 termed Inter Bif/Bif SpkrSex B )

Age-differentiated bifurcate collateral pattern: four terms, distinguished by both relative age and the sex of the connecting person can be glossed as father's elder brother, father's younger brother, mother's elder brother, and mother's younger brother (Murdock's K)
Lineal pattern: a special single term can be glossed as uncle, applying to both the father's and the mother's brothers and distinguishing them from the father
Simple bifurcate collateral pattern: two special terms, distinguished by the sex of the connecting relative, can be glossed as paternal uncle and maternal uncle
Simple bifurcate merging pattern: a single term can be glossed as mother's brother, paternal uncles being terminologically equated with father
Skewed bifurcate collateral pattern: three special terms, distinguished by the sex (mother or father) of the connecting person and also by age relative to that person, can be glossed as, in the case of paternal, uncles, father's elder brother. father's younger brother, and mother's brother
Speaker-differentiated bifurcate collateral pattern: four special terms, differentiated by the sex of the connecting person and sex of the speaker, can be glossed as father's brother (man speaking), father's brothera?? (woman speaking), mother's brother (man speaking), and mother's brother (woman speaking) (Murdock's N)
Speaker-differentiated bifurcate merging pattern: paternal uncles are terminologically equated with father, while maternal uncles are called by two special terms, differentiated by the sex of the speaker, which can be glossed as mother's brother (man speaking), and mother's brother (woman speaking) (Murdock's M)