s3020 조금씩 바꾸자 Change little by little

_*2 s3020 조금씩 바꾸자 Change little by little
_구삼신사 舊三新四 1101 _과거삼三 미래사四 1102 _암기삼三 창조사四 2800 _방어삼三 공격사四 1820

_*2 s3020 Change little by little
_Old Three New Four 1101 _Past Three Future Four 1102 _Recite Three Create Four 2800 _Defense Three Attack Four 1820