According to various embodiments, the first shape according to the first number of turns of the first layer 211 may correspond to the fourth shape according to the fourth number of turns of the fourth layer 222. For example, the first shape of the first layer 211 and the fourth shape of the fourth layer 222 may be the same as each other. As another example, the second shape according to the second number of turns of the second layer 212 may correspond to the third shape according to the third number of turns of the third layer 221. For example, the second shape of the second layer 212 and the third shape of the third layer 221 may be the same as each other.