True or False a$)$ in $\{\}-$

b$)$ in $\{,\{\}\}-$

c$)\{\}$ in $\{\}-$

d$)\{\}$ in $\{\{\}\}-$

e$)\{\}\{,\{\}\}-$

f$)\{\{\}\}\{,\{\}\}-$

g$)\{\{\}\}\{\{\},\{\}\}$