Butt_es

BUT                        ES
             BUTT                     IES
BUTTE           LIES
BUTTERFLIES

S            A
AS          AR
AS      WAR
EASTWARD

PHE                     ON
             PHEN         NON
PHENO        ENON
PHENOMENON

C          O            AN
             C               LO       AN
             CE        LOP    AN
         CELLOPHANE

            R        IS
    ER       IS
    XER      ISE
EXERCISE

      H                OT         U
HI              POT         US
      HIP         POT    MUS
HIPPOPOTAMUS

    C         AT
             OC      ATE
    HOC      LATE
CHOCOLATE