Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
roku (num) sixjlpt5
下りる oriru to come downichidan, jlpt4, verb, vintrans
人口 džinkou populationjlpt4, leda1
kawa riverjlpt5, shizen
よじ上る jodžinoboru to climb, to clamber (over, up), to scramble (up), to scale, to claw one's way upgodan, verb, vintrans