indicators of sufficiency, guaranteeing, necessity

IF all, any, every, no, none, when, the only, each

indicators of sufficiency

any

sufficiency

every

sufficiency

no

sufficiency

none

sufficiency

whenever/when

sufficiency

if

sufficiency

IS, were, never, invariably, was, will be, are, must, cannot, always

indicators of guarantees

is

guarantees

were

guarantees

never

guarantees

invariably

guarantees

was

guarantees

will be

guarantees

are

guarantees

must

guarantees

cannot

guarantees

always

guarantees

NEED, except, only if, require, unless, then, only

indicators of necessity

except

necessity

only if

necessity

require

necessity

unless

necessity

then

necessity

only

necessity