  Five mutually exclusive searches for supersymmetry are presented based on
events in which b jets and four W bosons are produced in proton-proton
collisions at sqrt(s) = 8 TeV. The data, corresponding to an integrated
luminosity of 19.5 inverse femtobarns, were collected with the CMS experiment
at the CERN LHC in 2012. The five studies differ in the leptonic signature from
the W boson decays, and correspond to all-hadronic, single-lepton,
opposite-sign dilepton, same-sign dilepton, and greater-than-or-equal-to-3
lepton final states. The results of the five studies are combined to yield 95%
confidence level limits for the gluino and bottom-squark masses in the context
of gluino and bottom-squark pair production, respectively. In the limit when
the lightest supersymmetric particle is light, gluino and bottom-squark masses
are excluded below 1280 and 570 GeV, respectively.
