切る/切れる/切れない => to do something completely to the end/unable to do; too much to finish/complete N3
~をかわきりに(~を皮切りに)      => One after another; starting with ~ N1
切る => Give up, stop... N3
Happens next
[切「き」]れない => Can't finish/complete A N3
Potential, Possibility
と言う/と言っていた => you could say; one might say; I'd say ~ N5
と言っている => To say that ... N3
Speaking
と言っていました => Someone said... N4
Speaking
と[言「い」]うのは => Means, is N3
Information, Report
と言われている => it is said that ~ N3
Heard
と[言「い」]わせれば => On the view of N1
Based/focused/depending on
から[言「い」]って => If you think about/consider A N2
Considering, Concerning
~と言ってもせいぜい~だけだ => Even if it’s said that…but it’s just…. N1
Emphasize