bare necessities
blackmail
call
call for
claim
condition
contribution
demand
demand for
desideration
desideratum
draft
drain
duty
essential
essentials
exaction
extortion
extortionate demand
heavy demand
imposition
impost
indent
indispensable
insistent demand
levy
must
must item
necessaries
necessary
necessities
necessity
need
need for
nonnegotiable demand
notice
occasion
order
precondition
prerequirement
prerequisite
provision
proviso
qualification
requisite
obligation
responsibility
capability
cost
issue
operation
plan
procedure
regulation
support