Vocabulary consisting only from characters you are able to read
上り
nobori
(1)ascent, climbing, ascending (path), climb, (2)up-train (e.g. going to Tokyo), (n,adj-no) (3)northward (towards Tokyo) jlpt3
よじ上る
jodžinoboru
to climb, to clamber (over, up), to scramble (up), to scale, to claw one's way upgodan, verb, vintrans
少しずつ
sukošizucu
little by littlemix
上がる
agaru
(1)to rise/to go up/to come up/to ascend/to be raised/ (2)to enter (esp. from outdoors)/to come in/to go in/ (3)to enter (a school)/to advance to the next grade/ (4)to get out (of water)/to come asho godan, verb, vintrans