What is an example of an Initial and Final Consonant Cluster

Initial consonant clusters are the complex sounds that are found at the beginning of English words. They are called clusters because each of the sounds in a cluster can be heard. Initial consonant clusters in English are formed by juxtaposing one or more stop consonants with one of three continuants: -l, -r, or s-

covering topics:-
What is an example of an initial cluster?
What is an example of an initial consonant?
What are examples of initial and final consonant digraphs?
What are the three types of consonant clusters?