added 6b functions into 6a
added 6b functions into 6a

FeMTTU/femus,giorgiobornia/femus,FeMTTU/femus,giorgiobornia/femus,FeMTTU/femus,FeMTTU/femus,giorgiobornia/femus,eaulisa/MyFEMuS,saikanth88/femus,saikanth88/femus,eaulisa/MyFEMuS,giorgiobornia/femus,saikanth88/femus,saikanth88/femus,eaulisa/MyFEMuS