${c1}          ::::.    ${c2}':::::     ::::'
${c1}          ':::::    ${c2}':::::.  ::::'
${c1}            :::::     ${c2}'::::.:::::
${c1}      .......:::::..... ${c2}::::::::
${c1}     ::::::::::::::::::. ${c2}::::::    ${c1}::::.
    ::::::::::::::::::::: ${c2}:::::.  ${c1}.::::'
${c2}           .....           ::::' ${c1}:::::'
${c2}          :::::            '::' ${c1}:::::'
${c2} ........:::::               ' ${c1}:::::::::::.
${c2}:::::::::::::                 ${c1}:::::::::::::
${c2} ::::::::::: ${c1}..              ${c1}:::::
${c2}     .::::: ${c1}.:::            ${c1}:::::
${c2}    .:::::  ${c1}:::::          ${c1}'''''    ${c2}.....
    :::::   ${c1}':::::.  ${c2}......:::::::::::::'
     :::     ${c1}::::::. ${c2}':::::::::::::::::'
${c1}            .:::::::: ${c2}'::::::::::
${c1}           .::::''::::.     ${c2}'::::.
${c1}          .::::'   ::::.     ${c2}'::::.
${c1}         .::::      ::::      ${c2}'::::.