Missing Letter

[olivia07]

pasta

[system]

astra

[system]

trace

[system]

track

[olivia07]

trick

[system]

stick

[system]

stuck

[system]

tacks

[system]

skate

[system]

slate

[system]

slave

[system]

seals

[system]

class

[system]

glass

[system]

slang

[system]

sling

[system]

cling

[system]

clang

[system]

lance

[system]

canal