Short vowels can be a little tricky. Sometimes they're written independently, but usually they're written above other tengwar

`C

`F

`G

`H

`J

~C

~F

~G

~H

~J

1C

1F

1G

1H

1J

lC

.C

lH

lJ

.F

.G

`C

/a/

`F

/e/

`G

/i/

`H

/o/

`J

/u/

~C

/a:/

~F

/e:/

~G

/i:/

~H

/o:/

~J

/u:/

1C

/ta/

1F

/te/

1G

/ti/

1H

/to/

1J

/tu/

lC

/ai/

.C

/au/

lH

/oi/

lJ

/ui/

.F

/eu/

.G

/iu/