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

<grammar>

air

air force

<specific_platoon_type-creatable-sing>

57mm anti air

57mm anti air machine gun

mixed air defense

s-60 anti air

<i_f_v-sing>

37mm anti air artillery

37mm anti air machine gun

mixed air defense fcr

mixed air defense fire control radar

mixed anti air fcr

mixed anti air fire control radar

swa mixed air defense fcr

swa mixed air defense fire control radar

swa mixed anti air fcr

swa mixed anti air fire control radar

<i_f_v-pl>

37mm anti air artilleries

37mm anti air machine guns

mixed air defense fcrs

mixed air defense fire control radars

mixed anti air fcrs

mixed anti air fire control radars

swa mixed air defense fcrs

swa mixed air defense fire control radars

swa mixed anti air fcrs

swa mixed anti air fire control radars

<specific_section_type-not_creatable-sing>

37mm anti air artillery

37mm anti air machine gun

<specific_team_type-sing>

37mm anti air artillery

37mm anti air machine gun

57mm anti air

57mm anti air machine gun

s-60 anti air

<team_or_group_section_echelon>

mixed self propelled anti air command group

mixed self propelled anti air radar group

mixed sp anti air c2

<specific_section_type-creatable-sing>

37mm anti air artillery

37mm anti air machine gun

<specific_vehicle_type-pl>

forward area air defense ground based sensors

<specific_team_type-creatable-sing>

37mm anti air artillery

37mm anti air machine gun

57mm anti air

57mm anti air machine gun

s-60 anti air

<specific_vehicle_type-sing>

forward area air defense ground based sensor

<i_f_v>

37mm anti air artilleries

37mm anti air artillery

37mm anti air machine gun

37mm anti air machine guns

mixed air defense fcr

mixed air defense fcrs

mixed air defense fire control radar

mixed air defense fire control radars

mixed anti air fcr

mixed anti air fcrs

mixed anti air fire control radar

mixed anti air fire control radars

swa mixed air defense fcr

swa mixed air defense fcrs

swa mixed air defense fire control radar

swa mixed air defense fire control radars

swa mixed anti air fcr

swa mixed anti air fcrs

swa mixed anti air fire control radar

swa mixed anti air fire control radars

<specific_team_type-not_creatable-sing>

37mm anti air artillery

37mm anti air machine gun

57mm anti air

57mm anti air machine gun

s-60 anti air

<specific_vehicle_type-not_creatable-pl>

forward area air defense ground based sensors

<specific_vehicle_type-creatable-sing>

forward area air defense ground based sensor

<specific_section_type-sing>

37mm anti air artillery

37mm anti air machine gun

<specific_platoon_type-not_creatable-sing>

57mm anti air

57mm anti air machine gun

mixed air defense

s-60 anti air

<specific_vehicle_type-not_creatable-sing>

forward area air defense ground based sensor

<specific_platoon_type-sing>

57mm anti air

57mm anti air machine gun

mixed air defense

s-60 anti air

<specific_vehicle_type-not_creatable>

forward area air defense ground based sensor

forward area air defense ground based sensors