S p sp

S p spS p spS p spS p sp
S p spS p spS p spS p spS p spS p spS p spS p sp
S p spS p spS p spS p spS p spS p spS p spS p spS p spS p spS p spS p sp
S p spS p spS p spS p spS p spS p spS p spS p spS p spS p spS p spS p spS p spS p spS p spS p sp
S p spS p spS p spS p spS p spS p spS p spS p sp