Speed Grid: 4A BOTH VOLUNTARY & UNIVERSAL 
Goal: 30s
Congratulations, you beat the goal! 🎉
calculation
voluntary
percolation
universal
apparatus
percolation
restitution
calculation
subatomic
substitution
opportunist
temporary
germination
oxidation
implication
implication
voluntary
substitution
apparatus
hydrocarbon
oxidation
subatomic
opportunist
germination