すら,ですら => Even A N1
(Not)only , (Not) even
んです => Because, by… N4
Situations and Experiences
でござる/でございます => By, with… N4
Honorifics
ですから => Because of A, B N3
Reason, Result, Response
ずにはおかない/ないではおかない => Will definitely A, N1
Will, Decision, Doing
おかげで => Because of A, B; Thanks to A, B N3
Reason, Result, Response
ずにはすまない/ないではすまない => A must be done N1
Potential, Possibility
がちです/がちになる => A tends to become/happen/occur N2
Potential, Possibility
だけではすまない => Doing A is not going to suffice N1
Miscellaneous
なお => Furthermore, A N2
Miscellaneous
ておく => Do something N4
Secondary Verb
の[末「すえ」]/た[末「すえ」] => conclusion N2
Reason, Result, Response