What was that last one? 2. 10. evolvetogetherFor a disposable option, look no further than evolvetogether. 6.
masks are only used in the winter months.
( z0 use :mod ( z1 only ) :rel ( z2 mask ) :time ( z3 date-entity :season ( z4 winter ) :unit ( z5 month :mod z1 ) ) )
(z0 / use-01
    :mod (z1 / only)
    :rel (z2 / mask-01)
    :time (z3 / date-entity
              :season (z4 / winter)
              :unit (z5 / month
                        :mod z1)))
masks are only used in the winter months .
z0 :mod z1
z0 :time z3
z3 :season z4
z3 :unit z5
z5 :mod z1
z0 :rel z2