三欄一組 多區多組 取非空 (14486)

N2:P19{=INDIRECT(TEXT(RIGHT(SMALL(IF(($C$2:$L$99<>"")*($C$1:$L$1=$L$1),$C$2:$L$99/1%%+ROW($2:$99)/1%+COLUMN(A:J),9^8),ROW(A1)),4),"!R0C00"),)&""