Words to Describe substitutions

How substitutions often is described ("________ substitutions")

• synonymous
• such
• phonetic
• trochaic
• isomorphic
• acid
• single
• alternative
• partial
• numerical
• necessary
• simple
• certain
• similar
• explicit
• obvious
• various
• specific
• allelic
• sound
• isomorphous
• arbitrary
• semantic
• additional
• fewer
• idempotent
• suitable
• variable
• minor
• appropriate
• nonconservative
• observed
• lexical
• electrophilic
• symbolic
• nucleotide
• corresponding
• acceptable
• consonant
• above
• phonemic
• usual
• further
• linear
• double
• frequent
• isotopic
• aromatic
• occasional
• ionic
• abstract
• functional
• generic
• technological
• back
• equivalent
• following
• phonological
• possible
• correct
• numerous
• proper
• indicated
• successive
• nucleophilic
• word
• homogeneous
• base
• silent
• verbal
• random
• conservative
• radical
• neutral
• multiple