General rules: add -ing
When the verb ends with a silent e, drop the e and add -ing
For short, one-syllable verbs, that end with consonant + vowel + consonant (CVC), we must double the last consonant and then add -ing
Verbs that end in -ie, change the ie to y before adding -ing
words that end w, x and y, do not double the last consonant; just add -ing.
Doing and asking
studying and boxing
making and creating
dying
swimming and cutting