N5 — outside your level filter
Is said whole, with nothing composed onto it and takes no だ/です, so there are no forms to conjugate.
どうもすみません
doumosumimasenI'm very sorry; thanksN5expression
Example sentences2
遅れて、どうもすみません。
okurete, doumo sumimasen.
I'm very sorry for being late. neutral
何度もお手数をおかけして、どうもすみません。
nando mo otesuu o okakeshite, doumo sumimasen.
I'm very sorry for the repeated trouble. formal