The rules that use the vocabulary item "fcrs" are:

<i_f_v-pl>

gainful fcrs

mixed aa fcrs

mixed air defense fcrs

mixed anti air fcrs

swa gainful fcrs

swa mixed aa fcrs

swa mixed air defense fcrs

swa mixed anti air fcrs

swa sa-6 fcrs

<i_f_v>

gainful fcrs

mixed aa fcrs

mixed air defense fcrs

mixed anti air fcrs

swa gainful fcrs

swa mixed aa fcrs

swa mixed air defense fcrs

swa mixed anti air fcrs

swa sa-6 fcrs