It is not always necessary to put a vowel between the code sounds. Some
letters combine into words without vowels between, as--
CuRTaiN--7412 CLuTTeR--7514 FaRMING--8437
BRaND--9421 PReaCHeR--9464 SPeNT--0921
PLaNT--9521 BuRGLaR--94754 SiLKS--0570
Also note that some words begin with vowels: Envelope for 2859; Amber
for 394.
If at first you cannot easily form words for all numbers, do not be
discouraged. Practice will give you most words instantaneously. Soon
you will instantly recognize numbers like 285 as Novel; 741 as Cart;
101 as Toast. This ability will come quickly if you practice and in no
other way will you acquire it.