と([思「おも」]う、[言「い」]う、[考「かんが」]える) => That A N4
Particles
さえ/にさえ/でさえ => Even N3
Not only, Not even
といえば/というと/といったら => N3
Considering, Concerning
にたえる/にたえない => Can't do A, can't stand/tolerate A, Can do A, N1
Potential, Possibility
の[末「すえ」]/た[末「すえ」] => conclusion N2
Reason, Result, Response
といえども => Even if A, even though A N1
Contrast/Surprise
かといえば => Although A is expected, B results N2
Contrast,Surprise
そういえば => Speaking of .., A by the way, A; N2
Considering, Concerning
とはいえ => Even though A, although it is said that A N1
Contrast/Surprise
ゆえに => Because of A N1
Reason, Result, Response
ざるを[得「え」]ない => Only A is left to do/can be done N2
(Not)only, (Not) even
うる/えない => A is possible, A can be done, A is not possible. N2
Potential, Possibility