c ccc ccccccccc ccc

v o nnnnnD

v o nD

v o nnnnD

v o bnDnnd
     nDnDnnbD

v o dbnDNNND NNNDNNNbD

kk d oo nn
    BBBBbSsssssssSb
kkkk
    BBBBbSssssSb
kkk



