2897. What characters can be added here so that each character contains a part of the previous character? a) 要 -> _ -> _ -> 増 b) 化 -> _ -> _ -> 静

a) 要 -> 如 -> 吐 -> 増

要 YOU, i(ru) - essential(s) need

如 JO, NYO - equal, like, as, as if

吐 TOU, ha(ku) - spew, vomit, give vent to

増 ZOU, ma(su), fu(eru), fu(yasu) - increase, rise, raise

b) 化 -> 旨 -> 晴 -> 静

化 KA, KE, ba(keru) - transform

旨 SHI, mune - purport, content, instruction

晴 SEI, ha(reru) - clear up

静 SEI ,JOU, shizu(ka), shizu(meru) - quiet, peaceful, still, quieten