harder to build harder to catch harder to come harder to control harder to convince harder to detect harder to digest harder to do harder to explain harder to fight harder to find harder to get harder to get out of harder to get rid harder to have harder to hear harder to hit harder to keep harder to kill harder to learn harder to look harder to lose harder to make harder to manage harder to measure harder to move harder to play harder to predict harder to prove harder to pull harder to reach harder to read harder to remember harder to remove harder to say harder to see harder to solve harder to spot harder to stop harder to take harder to trace harder to track harder to understand harder to win harder to write harder we harder work harder you harderwijk hardest hardest battle hardest challenge hardest challenges hardest day hardest days hardest decision hardest decisions hardest for me hardest game hardest hit hardest hit areas hardest i hardest job hardest job in the world hardest lesson hardest material hardest moment hardest moments hardest not hardest one hardest part hardest part for me hardest part is getting hardest part of writing hardest parts hardest place hardest problems hardest question hardest questions hardest step hardest substance hardest task hardest thing hardest thing for me hardest thing i hardest thing i have hardest thing i have ever hardest thing in the world hardest thing to do hardest thing you hardest things hardest things to do hardest time hardest times hardest to find hardest to get hardest to make hardest way hardest word