diff --git a/.github/lexicon.txt b/.github/lexicon.txt
index 6e04c246c..ac5482041 100644
--- a/.github/lexicon.txt
+++ b/.github/lexicon.txt
@@ -317,7 +317,6 @@ coproc
 coprocessor
 coprocessors
 coreid
-coroutinehandle
 covfs
 cp
 cpacr
@@ -344,16 +343,10 @@ cpu
 cr
 crc
 crcb
-crcoroutine
-crdelay
 creadonlyarray
 creadwritearray
 createevent
-crend
 crgint
-croutine
-crqueue
-crstart
 crt
 crtv
 crxedchar
@@ -1517,14 +1510,11 @@ prvaddcurrenttasktodelayedlist
 prvcheckinterfaces
 prvchecktaskswaitingtermination
 prvcopydatatoqueue
-prvcoroutineflashtask
-prvcoroutineflashworktask
 prvdeletetcb
 prvexitfunction
 prvgettimens
 prvheapinit
 prvidletask
-prvinitialisecoroutinelists
 prvinitialisemutex
 prvinitialisenewstreambuffer
 prvinitialisenewtimer
@@ -1638,15 +1628,11 @@ pxblocktoinsert
 pxcallbackfunction
 pxcode
 pxcontainer
-pxcoroutinecode
-pxcoroutinewoken
 pxcrcb
 pxcreatedtask
-pxcurrentcoroutine
 pxcurrenttcb
 pxcurrenttcbconst
 pxcurrenttimerlist
-pxdelayedcoroutinelist
 pxdelayedtasklist
 pxend
 pxendofstack
@@ -1681,7 +1667,6 @@ pxnextfreeblock
 pxnexttcb
 pxoriginalsp
 pxoriginaltos
-pxoverflowdelayedcoroutinelist
 pxoverflowdelayedtasklist
 pxowner
 pxportinitialisestack
@@ -1691,7 +1676,6 @@ pxqueue
 pxqueuebuffer
 pxqueuesetcontainer
 pxramstack
-pxreadycoroutinelists
 pxreadytaskslists
 pxreceivecompletedcallback
 pxregions
@@ -2463,7 +2447,6 @@ uxtopreadypriority
 uxtopusedpriority
 uxvariabletoincrement
 uxwantedbytes
-vacoroutine
 vadifferenttask
 vafunction
 val
@@ -2492,7 +2475,6 @@ vbr
 vbufferisr
 vcallbackfunction
 vclearinterruptmask
-vcoroutineschedule
 vddcore
 vec
 vectactive
@@ -2502,7 +2484,6 @@ ver
 veventgroupclearbitscallback
 veventgroupdelete
 veventgroupsetbitscallback
-vflashcoroutine
 vfp
 vfunction
 vic
@@ -2565,14 +2546,12 @@ vqueuedelete
 vqueueunregisterqueue
 vr
 vraiseprivilege
-vreceivingcoroutine
 vreg
 vresetprivilege
 vrestorecontextoffirsttask
 vrpm
 vsemaphorecreatebinary
 vsemaphoredelete
-vsendingcoroutine
 vsetbacklightstate
 vsoftwareinterruptentry
 vstartfirsttask
@@ -2706,9 +2685,6 @@ xcommandtime
 xcommsrxqueue
 xconsttickcount
 xcopyposition
-xcoroutinecreate
-xcoroutinepreviouslywoken
-xcoroutinequeue
 xcount
 xcreatedeventgroup
 xcrwokenbypost
@@ -2718,7 +2694,6 @@ xdd
 xdddd
 xdeadbeef
 xdelay
-xdelayedcoroutinelist
 xdelayedtasklist
 xdelaytime
 xe
@@ -2865,7 +2840,6 @@ xpar
 xparameters
 xpendedcounts
 xpendedticks
-xpendingreadycoroutinelist
 xpendingreadylist
 xperiod
 xportgetcoreid