This is the 6628th most frequent Russian word.
l
The Russian word "л" is a letter in the Cyrillic alphabet, equivalent to the English "L".
In this sentence, 'люблю' (lyublyu) contains the morpheme 'л', which serves as a part of the conjugated verb meaning 'love'. Hence, 'л' is merged into the verb structure to convey the action.
Я люблю читать книги.
I love to read books.
Here, 'шла' (shla) includes the letter 'л', functioning as part of the verb which is in the past tense feminine singular form, indicating her (female subject) movement in the past.
Она шла через парк.
She was walking through the park.
The word 'лошадь' (loshad'), meaning 'horse', and 'лугу' (lugu), meaning 'meadow', both include 'л'. These are just lexical instances where 'л' appears as a linguistic element.