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

<i_f_v-sing>

mt-lb with eighty two mortar

self propelled eighty two mortar

sp eighty two mortar

swa mt-lb with eighty two mortar

<i_f_v-pl>

mt-lb with eighty two mortars

self propelled eighty two mortars

sp eighty two mortars

swa mt-lb with eighty two mortars

<tens>

eighty

<scale_number-gapsout_null-gapsin_null>

eighty thousand

eighty five thousand

<i_f_v>

mt-lb with eighty two mortar

mt-lb with eighty two mortars

self propelled eighty two mortar

self propelled eighty two mortars

sp eighty two mortar

sp eighty two mortars

swa mt-lb with eighty two mortar

swa mt-lb with eighty two mortars