Add various Underflow / Overflow spelling corrections.
diff --git a/codespell_lib/data/dictionary.txt b/codespell_lib/data/dictionary.txt
index 9160e2e..ac4e5c5 100644
--- a/codespell_lib/data/dictionary.txt
+++ b/codespell_lib/data/dictionary.txt
@@ -21050,6 +21050,10 @@
 obeject->object
 obejection->objection
 obejects->objects
+oberflow->overflow
+oberflowed->overflowed
+oberflowing->overflowing
+oberflows->overflows
 obervation->observation
 obervations->observations
 oberve->observe
@@ -21207,7 +21211,6 @@
 odly->oddly
 ody->body
 oen->one
-oerflow->overflow
 ofcource->of course
 offcers->officers
 offcial->official
@@ -21824,6 +21827,9 @@
 overengeneering->overengineering
 overfl->overflow
 overfow->overflow
+overfowed->overflowed
+overfowing->overflowing
+overfows->overflows
 overhread->overhead
 overiddden->overridden
 overidden->overridden
@@ -21836,11 +21842,20 @@
 overlapp->overlap
 overlayed->overlaid
 overlflow->overflow
+overlflowed->overflowed
+overlflowing->overflowing
+overlflows->overflows
 overlfow->overflow
+overlfowed->overflowed
+overlfowing->overflowing
+overlfows->overflows
 overlodaded->overloaded
 overloded->overloaded
 overlodes->overloads
 overlow->overflow
+overlowed->overflowed, overloaded,
+overlowing->overflowing
+overlows->overflows
 overreidden->overridden
 overreide->override
 overreides->overrides
@@ -21920,6 +21935,9 @@
 owener->owner
 ower->lower, owner, over,
 owerflow->overflow
+owerflowed->overflowed
+owerflowing->overflowing
+owerflows->overflows
 owership->ownership
 owervrite->overwrite
 owervrites->overwrites
@@ -31843,9 +31861,24 @@
 undependend->independent, nondependent,
 underfiend->undefined
 underfined->undefined
+underfow->underflow
+underfowed->underflowed
+underfowing->underflowing
+underfows->underflows
 underlayed->underlaid
 underlaying->underlying
+underlflow->underflow
+underlflowed->underflowed
+underlflowing->underflowing
+underlflows->underflows
+underlfow->underflow
+underlfowed->underflowed
+underlfowing->underflowing
+underlfows->underflows
 underlow->underflow
+underlowed->underflowed
+underlowing->underflowing
+underlows->underflows
 underneeth->underneath
 underrrun->underrun
 undersacn->underscan
diff --git a/codespell_lib/data/dictionary_rare.txt b/codespell_lib/data/dictionary_rare.txt
index 07940b0..fba923e 100644
--- a/codespell_lib/data/dictionary_rare.txt
+++ b/codespell_lib/data/dictionary_rare.txt
@@ -106,6 +106,10 @@
 moue->mouse
 nickle->nickel
 noes->nose, knows, nodes, does,
+oerflow->overflow
+oerflowed->overflowed
+oerflowing->overflowing
+oerflows->overflows
 ore->or
 panting->painting
 pares->pairs