           .:*****  :=====.
        .:********  :========.
      .***********  :===========.
    .:************  :============-
   .**************  :==============
  :***************  :===============
 :**************.    :===============
.*************:        .=============.
*************.          .============:

${c1}:############.          ${c2}:==:
${c1}:##############.      ${c2}:======:
 ${c1}:################  ${c2}.==========:
  ${c1}:###############   ${c2}.===========:
   ${c1}:##############     ${c2}.===========:
    ${c1}:#############       ${c2}.=========:
      ${c1}:###########         ${c2}.=====:
        ${c1}.#########           ${c2}.=:
            ${c1}.#####