Vocabulary consisting only from characters you are able to read
根底
こんてい
root, basis, foundationmix
昭和
しょうわ
Showa era (1926.12.25-1989.1.7)seiji
必ず
かならず
always/without exception/necessarily/certainly/without fail/positively/invariably/(P)jlpt3, jlpt4, leda1