___
___ 週 [week]
is in  ___
is in  ___
On-reading: シュウ as in 今週 konshū ___
SHŪ (→ 周) week  
今週 konshū this week  
先週 senshū last week (= the week before) 先 [ahead] 
一週間 isshūkan for one week | the all week