IA (15 words)
IAA to Iatromathematician

IB (10 words)
Iberian to ibuprofen

IC (104 words)
icaco to Icy pearled

ID (119 words)
ID to Idyllic

IF (2 words)
If to Ifere

IG (45 words)
Igasuric to Iguanoid

IH (2 words)
Ihlang ihlang to IHVH

IK (1 word)
Ik to Ik

IL (156 words)
Il to Ilvaite

IM (733 words)
Im to Imrigh

IN (2866 words)
In to Inwrought

IO (43 words)
Io to Iowas

IP (5 words)
Ipecac to Ipsus

IQ (1 word)
IQ to IQ

IR (244 words)
Ir to Irvingite

IS (181 words)
Is to Isuret

IT (40 words)
It to Itzibu

IU (2 words)
IUD to Iulidan

IV (9 words)
Ivan Ivanovitch to Ivy mantled

IW (2 words)
Iwis to Iwo

IX (7 words)
ix to Ixtle

IY (1 word)
Iyar to Iyar

IZ (6 words)
Izanagi to Izzard