isConsonant
return isConsonant(z + 1);
while (isConsonant(z)) {
while (isConsonant(z)) {
while (isConsonant(z)) {
while (isConsonant(z)) {
while (isConsonant(z)) {
while (isConsonant(z)) {
return isConsonant(z) && z[0] == z[1];
return isConsonant(z) &&
isConsonant(z + 2);