Designate each carbon atom as primary, secondary, tertiary and quanternary in the following :
(a) `{:(" "CH_(3)),(" |"),(CH_(3)-C-CHCH_(2)CH_(2)CH_(3)),(" |"" |"),(" "CH_(3)""CH_(3)):}`

Explanation

`{:(" "overset(1^(@))(C)H_(3)" "overset(1^(@))(C)H_(3)),(" |"" |"),((a) overset(1^(@))(C)H_(3)overset(4^(@))(-C)-overset(3^(@))(C)H-overset(2^(@))(C)H_(2)-overset(2^(@))(C)H_(2)-overset(1^(@))(C)H_(3)" "(b)" "overset(1^(@))(C)H_(3)overset(3^(@))(-C)H-overset(2^(@))(C)H_(2)-overset(2^(@))(C)H_(2)-overset(3^(@))(C)H-overset(1^(@))(C)H_(3)),(" |"" |"" |"),(" "underset(1^(@))(C)H_(3)underset(1^(@))(C)H_(3)" ".^(1^(@))CH_(3)):}`
`{:(overset(1^(@))(C)H_(3)-overset(3^(@))(C)H-overset(3^(@))(C)H-overset(1^(@))(C)H_(3)),(" |"" |"),(" "underset(1^(@))(C)H_(3)" "underset(1^(@))(C)H_(3)):}`