  The origins of Standard Model (SM) quark/lepton masses and the
Cabibbo-Kobayashi-Maskawa (CKM) mixing pattern are described in an ${\rm
SU}(8)$ theory, where three-generational SM fermions transform differently. A
realistic symmetry breaking pattern with three intermediate scales is
described, along which all vectorlike electrically charged fermions become
massive. A set of $d=5$ operators that explicitly break the emergent global
symmetries are analyzed to generate the observed three-generational SM
quark/lepton mass hierarchies as well as the CKM mixing pattern. All SM flavors
are identified in the spectrum.
