mnn mnn mnn mnn
mnn mnn mnn mnn
co co co co
mnn mnn mnn mnn ?
m n n WORD_BOUNDARY m n n WORD_BOUNDARY m n n WORD_BOUNDARY m n n WORD_BOUNDARY
m n n WORD_BOUNDARY m n n WORD_BOUNDARY m n n WORD_BOUNDARY m n n WORD_BOUNDARY ? WORD_BOUNDARY