anyone know bash script?
 

im stuck on a small project for school, its a very basic "appointment book" script in bash, heres my problem:

What day would you like to see? mo
': not a valid identifier
'/plz: line 17: syntax error near unexpected token `in
'/plz: line 17: `case "$dayc" in


heres the code it comes from:

echo -n "What day would you like to see? " ; read day
dayc=`echo $day | cut -c1-2 | tr "A-Z" "a-z"`
case "$dayc" in
""mo|tu|we|th|fr|sa|su"") echo "Acceptable Input";;

i dont see whats wrong?